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Hire Dr. Mohamed A. E.

United Kingdom

USD 80 /hr

Senior HVDC Electrical Engineer. Specialising in feasibility studies, academic research, and technical report writing.

Profile Summary

Senior Electrical Engineer specialising in the authoring of comprehensive feasibility studies, advanced power system analysis, and high-level technical reports. My domain expertise covers high voltage direct current (HVDC) systems, offshore wind energy, power electronics converters, converter station architectures, and grid stability, with a strong emphasis on formatting documentation to rigorous international standards, including IEEE format. My professional experience focuses heavily on conducting technical assessments, evaluating grid recovery processes, and producing structured documentation for large-scale infrastructure projects. I excel at translating intricate engineering concepts, complex formulas, and simulation data into clear, concise, and scannable reports for external stakeholders, regulatory bodies, and engineering firms. Throughout my career, I have delivered independent report auditing, technical writing, and thorough feasibility assessments that ensure absolute compliance with academic and industrial publishing guidelines. I bring a highly disciplined approach to report verification, helping clients transform complex technical data into authoritative, publication-ready documentation.

Subject Matter Expertise

• ☆ Electrical Engineering
• ☆ Semiconductors
• ☆ Power Engineering
• ☆ Engineering Education
• ☆ Gap Analysis

Services

• Writing
• Research
• Data & AI

Writing Technical Writing

Research Feasibility Study

Data & AI Statistical Analysis

Work Experience

Senior Engineer

SSE

December 2024 - Present

Lecturer

Glasgow Caledonian University

September 2021 - Present

Education

PhD

Strathclyde University

May 2015 - May 2018

Certifications

• Doctor of Philosophy

  Strathclyde University

  November 2018 - Present

Publications

JOURNAL ARTICLE

Mohamed A. Elgenedy, Mahmoud A. Alshahat, Mark T. S. Williams, Ahmed A. Aboushady, Hadi Larijani (2026). Systematic In Vitro Investigation of PEFs Pulse Parameter Specifications on HepG2 Liver Cancer Cells . Applied Sciences.

Mohamed A. Elgenedy, Mahmoud A. Alshahat, Mark T. S. Williams, Ahmed A. Aboushady, Hadi Larijani (2026). Systematic In Vitro Investigation of PEFs Pulse Parameter Specifications on HepG2 Liver Cancer Cells . Applied Sciences.

Mohamed A. Elgenedy, Mahmoud A. Alshahat, Ahmed A. Aboushady, Mark Williams (2025). A Low-Voltage-Driven Cascaded Half-Bridge Modular Pulse Generator for Tumor Treating Fields Cancer Therapy . IEEE Journal of Emerging and Selected Topics in Power Electronics.

A low-voltage-driven cascaded half-bridge modular pulse generator for tumour treating fields cancer therapy @article{b20b093bce1f4ee7b27a3a025fc9d522, title = "A low-voltage-driven cascaded half-bridge modular pulse generator for tumour treating fields cancer therapy", abstract = "Cancer treatment is heading into a new era by utilising Tumour Treating Fields (TTFields) as a solo treatment or in combination with systemic therapies. The treatment intensively relies on a Pulse Generator (PG), and the more versatile the PG, the more flexibility it offers in exposing the cells to various sets of pulse bursts. The literature shows that mixed synergetic pulses show a better effect in increasing the ablation area and killing cancer cells during in vitro and in vivo trials. This paper presents a fully modular and versatile pulse generator driven by low voltage DC source designed for TTFields-based cancer therapy, with the capability to boost the voltage by twice the number of submodules. The PG employs a cascaded half-bridge (CHB) submodule, with submodule capacitors charged sequentially while switches are softly reconfigured for a series connection to generate the required voltage pulses. SiC wide-bandgap devices aided by a soft-switching strategy are employed to reduce switching losses, improve pulse rise time, and enable higher repetition rates. A novel utilisation of the on-die configurable logic block (CLB) for the C2000 digital signal controller facilitates control of the high number of gate signals and mitigates the complexity of using a Field Programmable Gate Array (FPGA). The proposed concept is validated through MATLAB/Simulink modelling and experimental testing on a resistive load. The results have shown the system{\textquoteright}s reliable pulse shaping, voltage scalability, and precise control, highlighting its potential in preclinical cancer studies.", keywords = "Cascaded Half-Bridge (CHB), Electroporation, Modular Pulse Generator (PG), Soft Switching, Synergetic Tumour Treating Fields (TTFields) Pulses", author = "Alshahat, \{Mahmoud A.\} and Mohamed Elgenedy and Aboushady, \{Ahmed A.\} and Mark Williams", year = "2025", month = aug, day = "4", doi = "10.1109/JESTPE.2025.3595626", language = "English", journal = "IEEE Journal of Emerging and Selected Topics in Power Electronics", issn = "2168-6777", publisher = "Institute of Electrical and Electronics Engineers Inc.", } . IEEE Journal of Emerging and Selected Topics in Power Electronics.

A review of modular electrical sub-systems of electric vehicles @article{d4f90616b7004ea8a1f0f5bda7f84f12, title = "A review of modular electrical sub-systems of electric vehicles", abstract = "Climate change risks have triggered the international community to find efficient solutions to reduce greenhouse gas (GHG) emissions mainly produced by the energy, industrial, and transportation sectors. The problem can be significantly tackled by promoting electric vehicles (EVs) to be the dominant technology in the transportation sector. Accordingly, there is a pressing need to increase the scale of EV penetration, which requires simplifying the manufacturing process, increasing the training level of maintenance personnel, securing the necessary supply chains, and, importantly, developing the charging infrastructure. A new modular trend in EV manufacturing is being explored and tested by several large automotive companies, mainly in the USA, the European Union, and China. This modular manufacturing platform paves the way for standardised manufacturing and assembly of EVs when standard scalable units are used to build EVs at different power scales, ranging from small light-duty vehicles to large electric buses and trucks. In this context, modularising EV electric systems needs to be considered to prepare for the next EV generation. This paper reviews the main modular topologies presented in the literature in the context of EV systems. This paper summarises the most promising topologies in terms of modularised battery connections, propulsion systems focusing on inverters and rectifiers, modular cascaded EV machines, and modular charging systems.", keywords = "electric vehicles (EVs), on-board battery chargers (OBCs), power factor correction (PFC), auxiliary power module (APM), propulsion system, traction inverter", author = "Ahmed Darwish and Elgenedy, \{Mohamed A.\} and Williams, \{Barry W.\}", year = "2024", month = jul, doi = "10.3390/en17143474", language = "English", volume = "17", journal = "Energies", issn = "1996-1073", publisher = "Multidisciplinary Digital Publishing Institute (MDPI)", number = "14", } . Energies.

A new torque control approach for torque ripple minimisation in switched reluctance drives @article{fbe663828abb41bca3a85689e9d95416, title = "A new torque control approach for torque ripple minimisation in switched reluctance drives", abstract = "The switched reluctance motor (SRM) has many merits, such as robustness, a simple construction, low cost, and no permanent magnets. However, its deployment in servo applications is restrained due to acoustic noise and torque ripple (TR). This paper presents a new torque control approach for TR reduction in switched reluctance drives. The approach is based on the maximum utilisation of the available dc-link voltage, hence extending the zero torque-ripple speed range. The approach is suitable for an SRM with any number of phases and stator/rotor poles. Soft switching control is deployed, which reduces switching losses. At any instant (regardless of the number of phases being conducted simultaneously), only one phase current is controlled. The well-established torque-sharing function concept is adapted and generalised to cater for more than two phases conducting simultaneously. MATLAB/Simulink confirmation simulations are based on the widely studied four-phase 8/6, 4 kW, 1500 rpm SRM.", keywords = "current profiling, electric vehicles, switched reluctance motor, torque ripple, torque sharing", author = "Ali Abdel-Aziz and Mohamed Elgenedy and Barry Williams", year = "2024", month = jul, day = "7", doi = "10.3390/en17133334", language = "English", volume = "17", journal = "Energies", issn = "1996-1073", publisher = "Multidisciplinary Digital Publishing Institute (MDPI)", number = "13", } . Energies.

Review of switched reluctance motor converters and torque ripple minimisation techniques for electric vehicle applications @article{0cbe95b9b1eb4f10bf43bcc03418d056, title = "Review of switched reluctance motor converters and torque ripple minimisation techniques for electric vehicle applications", abstract = "This paper presents a review of the most common power converters and torque ripple minimisation approaches for switched reluctance motors (SRMs). Unlike conventional three-phase AC motors, namely squirrel cage induction motors and permanent magnet synchronous motors, which require a typical three-phase inverter for operation, the switched reluctance motor requires a different topology power converter for reliable and efficient operation. In addition, due to the non-linear, discrete nature of SRM torque production, torque ripple is severely pronounced, which is undesirable in servo applications like electric vehicles. Hence, deploying a proper torque control function for smooth and quiet motor operation is crucial. This paper sheds light over the most popular SRM power converters as well as torque ripple minimisation methods, and it suggests an optimal SRM drive topology for EV applications.", keywords = "electric vehicles, power converters, switched reluctance motor, torque ripple minimisation, voltage boosting", author = "Ali Abdel-Aziz and Mohamed Elgenedy and Barry Williams", year = "2024", month = jul, day = "3", doi = "10.3390/en17133263", language = "English", volume = "17", journal = "Energies", issn = "1996-1073", publisher = "Multidisciplinary Digital Publishing Institute (MDPI)", number = "13", } . Energies.

Model predictive current control for a low-cost shunt active power filter @article{06784052dab946d99c01b4d5fab35f28, title = "Model predictive current control for a low-cost shunt active power filter", abstract = "Performance of a three-phase shunt active power filter (SAPF) relies on the capability of the controller to track the reference current. Therefore, designing an accurate current controller is crucial to guarantee satisfactory SAPF operation. This paper presents a model predictive current controller (MPCC) for a low-cost, four-switch, shunt active power filter for power quality improvement. A four-switch, B4, converter topology is adopted as an SAPF, hence offering a simple, robust, and low-cost solution. In addition, to further reduce overall cost, only two interfacing filter inductors, instead of three, are used to eliminate switching current ripple. The proposed SAPF model MPCC is detailed for implementation, where simulation and experimental results validate effectiveness of the proposed control algorithm showing a 20\% improvement in total harmonic distortion compared with a conventional hysteresis band current controller.", keywords = "Four-switch converter, harmonic distortion, model predictive current control,, power quality, shunt active power filter, model predictive current control", author = "Abdel-Aziz, \{Ali A.\} and Elgenedy, \{Mohamed A.\} and Williams, \{Barry W.\}", year = "2024", month = jul, doi = "10.17775/CSEEJPES.2023.00570", language = "English", volume = "10", pages = "1589--1598", journal = "CSEE Journal of Power and Energy Systems ", publisher = "China Electric Power Research Institute", number = "4", } . CSEE Journal of Power and Energy Systems.

Two-leg neutral-point diode-clamped active front-end rectifier @article{ff403ae2a3a940c7926668945a3277c4, title = "Two-leg neutral-point diode-clamped active front-end rectifier", abstract = "Active front-end boost rectifiers can replace the uncontrolled diode bridge rectifiers for ac-dc conversion offering high power quality with near unity power factor. The four-switch, B4, topology is gaining interest, either as an inverter or a rectifier, where each switch should withstand the full dc link voltage. Higher voltage-rated power semiconductor devices not only imply slower response with lower overall efficiency but also higher cost and size. Thus, multilevel inverters become a viable solution. This paper investigates a two-leg neutral-point diode-clamped B8 rectifier allowing the series connection of fast, efficient, and low voltage rating switches. The proposed rectifier has better performance and efficiency than the B4 rectifier. Only two inductors instead of three are required. Model predictive current control (MPCC) is developed for accurate current tracking. A model of the proposed rectifier is detailed for the implementation of MPCC. The concept is validated by simulation and experimentation.", keywords = "active front-end rectifier, harmonic distortion, model predictive current control, neutral-point diode-clamped converter, power quality, unity power factor, Capacitors, Switches, Harmonic analysis, Inductors, Power harmonic filters, Active front-end rectifier, Rectifiers, Voltage, model predictive current control (MPCC), Active front-end rectifier (AFER), neutral-point diode-clamped converter (NPC)", author = "Ali AbdelAzizi and Mohamed Elgenedy and Barry Williams", year = "2023", month = nov, day = "23", doi = "10.1109/JESTPE.2023.3336571", language = "English", volume = "12", pages = "405--419", journal = "IEEE Journal of Emerging and Selected Topics in Power Electronics", issn = "2168-6777", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "1", } . IEEE Journal of Emerging and Selected Topics in Power Electronics.

A comparative review of three different power inverters for DC–AC applications @article{e15c842d75c04fac9530a19d9ec86599, title = "A comparative review of three different power inverters for DC–AC applications", abstract = "This paper presents a comparative review of three different widely used power inverters, namely the conventional six-switch inverter; the reduced switch count four-switch inverter; and the eight-switch inverter. The later inverter can be reconfigured as a neutral-point diode-clamped inverter at the failure of one inverter leg. The three power inverters are compared and discussed with respect to cost, complexity, losses, common mode voltage, and control techniques. The paper is intended to serve as a guide regarding selecting the appropriate inverter for each specific application. Simulation results are presented to demonstrate the performance of the three power inverters, followed by a comprehensive comparison between the three power inverters.", keywords = "common mode voltage, DC–AC power inverters, neutral-point diode-clamped inverter, reduced-switch-count inverter, space vector modulation", author = "Ali AbdelAzizi and Mohamed Elgenedy and Barry Williams", year = "2023", month = nov, doi = "10.3390/en16217254", language = "English", volume = "16", journal = "Energies", issn = "1996-1073", publisher = "Multidisciplinary Digital Publishing Institute (MDPI)", number = "21", } . Energies.

Cancer treatment: an overview of pulsed electric field utilization and generation @article{8319a7488130441d9de9ecd3bc8220da, title = "Cancer treatment: an overview of pulsed electric field utilization and generation", abstract = "Patients diagnosed with cancer receive different types of treatments based on the type and the level of the tumour. An emerging treatment that differs from well-developed systematic therapies (i.e., Chemotherapy, Radiotherapy, and Immunotherapy) is Tumour Treating Field (TTF) treatment. Tumour behaviour under TTF treatment varies based on the electric field intensity; the process of exposing the tumour cells to an electric field is called electroporation. From the electrical perspective, the most efficient method for electroporation is to use a voltage pulse generator. Several pulse generator topologies have been introduced to overcome existing limitations, mitigate the drawbacks of classical generators, and provide more controllable, flexible, and portable solid-state voltage pulse generators. This paper provides a review of cancer treatment using TTF and highlights the key specifications required for efficient treatment. Additionally, potential voltage pulse generators are reviewed and compared in terms of their treatment efficacy and efficient use of electrical power.", keywords = "cancer treatment, electroporation, high-voltage pulse generator, pulsed electric field (PEF), tumour treating field (TTF), electroporator", author = "Alshahat, \{Mahmoud A.\} and Elgenedy, \{Mohamed A.\} and Aboushady, \{Ahmed A.\} and Williams, \{Mark T.S.\}", year = "2023", month = sep, doi = "10.3390/app131810029", language = "English", volume = "13", journal = "Applied Sciences", issn = "2076-3417", publisher = "MDPI", number = "18", } . Applied Sciences.

Mohamed A. Elgenedy, Mahmoud A. Alshahat, Ahmed A. Aboushady, Mark T. S. Williams (2023). Cancer Treatment: An Overview of Pulsed Electric Field Utilization and Generation . Applied Sciences.

Mohamed A. Elgenedy, Mahmoud A. Alshahat, Ahmed A. Aboushady, Mark T. S. Williams (2023). Cancer Treatment: An Overview of Pulsed Electric Field Utilization and Generation . Applied Sciences.

Mohamed A. Elgenedy, Sherif M. Dabour, Ahmed A. Aboushady, I. A. Gowaid, Mohamed Emad Farrag, Ayman S. Abdel-Khalik, Ahmed M. Massoud, Shehab Ahmed (2022). Symmetrical Nine-Phase Drives with a Single Neutral-Point: Common-Mode Voltage Analysis and Reduction . Applied Sciences.

Symmetrical nine-phase drives with a single neutral-point: common-mode voltage analysis and reduction @article{4fcd628725e8496cbe95e84baa9913d0, title = "Symmetrical nine-phase drives with a single neutral-point: common-mode voltage analysis and reduction", abstract = "Power converters generate switching common mode voltage (CMV) through the pulse width modulation (PWM). Several problems occur in the drive systems due to the generated CMV. These problems can be dangerous to the insulation and bearings of the electric machine windings. In recent years, many modulation methods have been developed to reduce the CMV in multiphase machines. Symmetrical nine-phase machines with single-neutral are considered in this paper. In this case, conventional PWM uses eight active vectors of different magnitudes in combination with two zero states in a switching cycle, and this generates maximum CMV. This paper proposes two PWM schemes to reduce the CMV in such a system. The first scheme is called active zero state (AZS). It replaces the zero vectors with suitable opposite active vectors. The second scheme uses ten large active vectors during switching and is called SVM-10L. Compared with conventional strategies, the AZS reduces the peak CMV by 22.2\%, and the SVM-10L reduces the peak CMV by 88.8\%. Moreover, this paper presents a carrier-based implementation of the proposed schemes to simplify the implementation. The proposed schemes are assessed using simulations and experimental studies for an induction motor load under different case studies.", keywords = "nine-phase motor, space vector modulation (SVM), common mode voltage (CMV), nine-phase inverter", author = "Dabour, \{Sherif M.\} and Aboushady, \{Ahmed A.\} and Elgenedy, \{Mohamed A.\} and Gowaid, \{I. A.\} and Farrag, \{Mohamed Emad\} and Abdel-Khalik, \{Ayman S.\} and Massoud, \{Ahmed M.\} and Shehab Ahmed", year = "2022", month = dec, doi = "10.3390/app122412553", language = "English", volume = "12", journal = "Applied Sciences", issn = "2076-3417", publisher = "MDPI", number = "24", } . Applied Sciences.

Mohamed A. Elgenedy, Sherif M. Dabour, Ahmed A. Aboushady, I. A. Gowaid, Mohamed Emad Farrag, Ayman S. Abdel-Khalik, Ahmed M. Massoud, Shehab Ahmed (2022). Symmetrical Nine-Phase Drives with a Single Neutral-Point: Common-Mode Voltage Analysis and Reduction . Applied Sciences.

Performance analysis and evaluation of multiphase split-source inverters @article{a455a54802a7402b9022819060b5e695, title = "Performance analysis and evaluation of multiphase split-source inverters", abstract = "Due to their many advantages over their counterparts, such as Z-source inverters (ZSIs), split-source inverters (SSIs) have recently received much attention as single-stage boost inverters. This paper discusses a multiphase version of the SSI topology for the first time. Among multiphase systems undergoing a revolution in the research area, five-phase motor drives are a relatively practical selection in industrial applications. Therefore, this paper focuses on a five-phase SSI as an example. The topology, operating principles, modulation techniques, and performance analysis of the analyzed topology are introduced. A modified space-vector modulation (MSVM) scheme is developed to eliminate low-frequency ripples in the input current. There is also a detailed analysis and graphical evaluation of the output currents ripples using the space-vector approach. It is evident that multiphase SSI is suitable for motor drives, especially when a high-output voltage gain is required. In addition to having a nearly identical ripple in output current to a conventional VSI, it has the benefit of performing the boosting action in a single stage with fewer passive components and a low ripple in input current. Finally, the simulation and experimental results have been conducted to demonstrate the viability of the multiphase SSI studied in the theoretical study and analysis.", keywords = "split-source inverter, multiphase systems, five-phase inverters, modified space-vector modulation, DC and AC ripples analysis", author = "Dabour, \{Sherif M.\} and Aboushady, \{Ahmed A.\} and I.A. Gowaid and Elgenedy, \{Mohamed A.\} and Farrag, \{Mohamed E.\}", year = "2022", month = nov, doi = "10.3390/en15228411", language = "English", volume = "15", journal = "Energies", issn = "1996-1073", publisher = "Multidisciplinary Digital Publishing Institute (MDPI)", number = "22", } . Energies.

Unlocking the UK continental shelf electrification potential for offshore oil and gas installations: a power grid architecture perspective @article{6e24ee9e367a4893b8321f00c4ac7023, title = "Unlocking the UK continental shelf electrification potential for offshore oil and gas installations: a power grid architecture perspective", abstract = "Most of the UK Continental Shelf (UKCS) oil and gas (OG) installations have traditionally adopted in situ power generation, which is not only inefficient but also generating about 70\% of the offshore CO2 emissions. The offshore wind and energy storage technologies for deep water are developing at a fast pace, enabling great opportunities for the OG installations located in the North Sea. In this paper, a pathway for the UKCS offshore OG installations electrification is introduced. The aim is to provide different power architectures that facilitate the OG installations{\textquoteright} electrification, while benefiting from the existing and planned UK offshore wind power. Four hypothetical case studies (based on real data) were created, along the UKCS, where the corresponding power architectures were proposed. The selection of each architecture power component (e.g., transformers, converters and cables), as well as the transmission and distribution technology (e.g., AC or DC), is also provided and justified. Further, an overview cost estimation is carried out to predict the architecture capital cost. It is concluded that the four architectures can be mimicked not only along the UKCS but also worldwide, promoting the UKCS potential for a world-leading offshore energy hub and fostering the UK offshore wind-energy resources.", keywords = "CapEx, CO2 emissions, HVDC, net-zero, offshore, oil and gas, UKCS, wind energy", author = "Mohamed Elgenedy and Khaled Ahmed and Graeme Burt and Graeme Rogerson and Greg Jones", year = "2021", month = nov, doi = "10.3390/en14217096", language = "English", volume = "14", journal = "Energies", issn = "1996-1073", publisher = "Multidisciplinary Digital Publishing Institute (MDPI)", number = "21", } . Energies.

Unlocking the UK Continental Shelf electrification potential for offshore oil and gas installations @article{a83a3e595a024adeb7e7ae033bf6045e, title = "Unlocking the UK Continental Shelf electrification potential for offshore oil and gas installations: a power grid architecture perspective", abstract = "Most of the UK Continental Shelf (UKCS) oil and gas (OG) installations have traditionally adopted in situ power generation, which is not only inefficient but also generating about 70\% of the offshore CO2 emissions. The offshore wind and energy storage technologies for deep water are developing at a fast pace, enabling great opportunities for the OG installations located in the North Sea. In this paper, a pathway for the UKCS offshore OG installations electrification is introduced. The aim is to provide different power architectures that facilitate the OG installations' electrification, while benefiting from the existing and planned UK offshore wind power. Four hypothetical case studies (based on real data) were created, along the UKCS, where the corresponding power architectures were proposed. The selection of each architecture power component (e.g., transformers, converters and cables), as well as the transmission and distribution technology (e.g., AC or DC), is also provided and justified. Further, an overview cost estimation is carried out to predict the architecture capital cost. It is concluded that the four architectures can be mimicked not only along the UKCS but also worldwide, promoting the UKCS potential for a world-leading offshore energy hub and fostering the UK offshore wind-energy resources.", keywords = "CapEx, CO2 emissions, HVDC, net-zero, offshore, oil and gas, UKCS, wind energy", author = "Mohamed Elgenedy and Khaled Ahmed and Graeme Burt and Graeme Rogerson and Greg Jones", year = "2021", month = oct, day = "30", doi = "10.3390/en14217096", language = "English", volume = "14", journal = "Energies", issn = "1996-1073", publisher = "MDPI AG", number = "21", } . Energies.

Mohamed Elgenedy, Khaled Ahmed, Graeme Burt, Graeme Rogerson, Greg Jones (2021). Unlocking the UK Continental Shelf Electrification Potential for Offshore Oil and Gas Installations: A Power Grid Architecture Perspective . Energies.

Modified variable step-size incremental conductance MPPT technique for photovoltaic systems @article{c797c62987d344c4a57d5868c637562d, title = "Modified variable step-size incremental conductance MPPT technique for photovoltaic systems", abstract = "A highly efficient photovoltaic (PV) system requires a maximum power point tracker to extract peak power from PV modules. The conventional variable step-size incremental conductance (INC) maximum power point tracking (MPPT) technique has two main drawbacks. First, it uses a pre-set scaling factor, which requires manual tuning under different irradiance levels. Second, it adapts the slope of the PV characteristics curve to vary the step-size, which means any small changes in PV module voltage will significantly increase the overall step-size. Subsequently, it deviates the operating point away from the actual reference. In this paper, a new modified variable step-size INC algorithm is proposed to address the aforementioned problems. The proposed algorithm consists of two parts, namely autonomous scaling factor and slope angle variation algorithm. The autonomous scaling factor continuously adjusts the step-size without using a pre-set constant to control the trade-off between convergence speed and tracking precision. The slope angle variation algorithm mitigates the impact of PV voltage change, especially during variable irradiance conditions to improve the MPPT efficiency. The theoretical investigations of the new technique are carried out while its practicability is confirmed by simulation and experimental results.", keywords = "autonomous scaling factor, photovoltaic (PV), slope angle variation, variable step-size INC", author = "Isaac Owusu-Nyarko and Elgenedy, \{Mohamed A.\} and Ibrahim Abdelsalam and Ahmed, \{Khaled H.\}", year = "2021", month = oct, doi = "10.3390/electronics10192331", language = "English", volume = "10", journal = "Electronics", issn = "2079-9292", publisher = "MDPI", number = "19", } . Electronics.

Mohamed Elgenedy, Khaled Ahmed, Graeme Burt, Graeme Rogerson, Greg Jones (2021). Unlocking the UK Continental Shelf Electrification Potential for Offshore Oil and Gas Installations: A Power Grid Architecture Perspective . Energies.

Mohamed A. Elgenedy, Isaac Owusu-Nyarko, Ibrahim Abdelsalam, Khaled H. Ahmed (2021). Modified Variable Step-Size Incremental Conductance MPPT Technique for Photovoltaic Systems . Electronics.

Mohamed A. Elgenedy, Isaac Owusu-Nyarko, Ibrahim Abdelsalam, Khaled H. Ahmed (2021). Modified Variable Step-Size Incremental Conductance MPPT Technique for Photovoltaic Systems . Electronics.

DC–DC converter concept allowing line commutated converters and voltage source converters based HVDC systems connectivity @article{fbe0582cf8004c5f9069f7fb3929e114, title = "DC–DC converter concept allowing line commutated converters and voltage source converters based HVDC systems connectivity", abstract = "The most common two challenges in high-voltage direct current (HVDC) multi-terminal transmission are the DC fault isolation and the DC voltage stepping up/down. Additionally, interconnecting voltage source converter (VSC)- and line commutated converter (LCC)-based HVDC network topologies has been challenging. This study introduces a new DC–DC converter topology concept connecting both LCC- and VSC-based HVDC networks with bidirectional power flow without operation stoppage. The proposed topology is formed of two front-to-front connected bridges with an AC-link formed of a capacitor and an inductor (which can be replaced by a transformer for voltage step-up/step-down). The LCC-HVDC network bridge is formed of insulated gate commutated thyristors while the VSC-HVDC network bridge is formed of insulated gate bipolar transistors. Therefore, ON/OFF switching of both bridges and bi-directional power flow are possible. Moreover, the reactive power transfer is nullified at rated active power exchange between the proposed converter bridges. The proposed concept's detailed analysis and control equations are introduced. Different operation scenarios are simulated in addition to scaled-down experimentation to test the applicability of power transfer scenarios without operation stoppage in normal operation.", keywords = "HVDC, DC-DC converter, line commutated converter, voltage source converter", author = "Elgenedy, \{Mohamed A.\} and Ahmed, \{Khaled Hani\} and Aboushady, \{Ahmed A.\} and Ibrahim Abdelsalam", year = "2020", month = nov, day = "25", doi = "10.1049/iet-pel.2020.0054", language = "English", volume = "13", pages = "3294--3304", journal = "IET Power Electronics", issn = "1755-4535", publisher = "John Wiley \& Sons Inc.", number = "15", } . IET Power Electronics.

DC-DC converter concept allowing line commutated converters and voltage source converters based HVDC systems connectivity @article{bbac6552a8874d049a8dcef998d6499c, title = "DC-DC converter concept allowing line commutated converters and voltage source converters based HVDC systems connectivity", abstract = "The most common two challenges in high-voltage direct current (HVDC) multi-terminal transmission are the DC fault isolation and the DC voltage stepping up/down. Additionally, interconnecting voltage source converter (VSC)- and line commutated converter (LCC)-based HVDC network topologies has been challenging. This study introduces a new DC–DC converter topology concept connecting both LCC- and VSC-based HVDC networks with bidirectional power flow without operation stoppage. The proposed topology is formed of two front-to-front connected bridges with an AC-link formed of a capacitor and an inductor (which can be replaced by a transformer for voltage step-up/step-down). The LCC-HVDC network bridge is formed of insulated gate commutated thyristors while the VSC-HVDC network bridge is formed of insulated gate bipolar transistors. Therefore, ON/OFF switching of both bridges and bi-directional power flow are possible. Moreover, the reactive power transfer is nullified at rated active power exchange between the proposed converter bridges. The proposed concept's detailed analysis and control equations are introduced. Different operation scenarios are simulated in addition to scaled-down experimentation to test the applicability of power transfer scenarios without operation stoppage in normal operation.", keywords = "load flow, power transmission faults, HVDC power convertors, HVDC power transmission, DC-DC power convertors, Insulated gate bipolar transistors, thyristors, voltage-source convertors", author = "Mohamed Elgenedy and Ahmed, \{Khaled Hani\} and Aboushady, \{Ahmed A.\} and Ibrahim Abdelsalam", note = "Acceptance in SAN AAM: no embargo Title updated, removed 'A new' and Abstract updated from website - CR (03/10/20) \textasciicircum{}AAM title updated also ET 26/1/21", year = "2020", month = nov, day = "25", doi = "10.1049/iet-pel.2020.0054", language = "English", volume = "13", pages = "3294--3304", journal = "IET Power Electronics", issn = "1755-4535", publisher = "John Wiley \& Sons Inc.", number = "15", } . IET Power Electronics.

DC–DC converter concept allowing line commutated converters and voltage source converters based HVDC systems connectivity @article{0dfa372de4624a2d9448d84775d2b534, title = "DC–DC converter concept allowing line commutated converters and voltage source converters based HVDC systems connectivity", abstract = "The most common two challenges in high-voltage direct current (HVDC) multi-terminal transmission are the DC fault isolation and the DC voltage stepping up/down. Additionally, interconnecting voltage source converter (VSC)- and line commutated converter (LCC)-based HVDC network topologies has been challenging. This study introduces a new DC–DC converter topology concept connecting both LCC- and VSC-based HVDC networks with bidirectional power flow without operation stoppage. The proposed topology is formed of two front-to-front connected bridges with an AC-link formed of a capacitor and an inductor (which can be replaced by a transformer for voltage step-up/step-down). The LCC-HVDC network bridge is formed of insulated gate commutated thyristors while the VSC-HVDC network bridge is formed of insulated gate bipolar transistors. Therefore, ON/OFF switching of both bridges and bi-directional power flow are possible. Moreover, the reactive power transfer is nullified at rated active power exchange between the proposed converter bridges. The proposed concept's detailed analysis and control equations are introduced. Different operation scenarios are simulated in addition to scaled-down experimentation to test the applicability of power transfer scenarios without operation stoppage in normal operation.", keywords = "HVDC, DC-DC converter, line commutated converter, voltage source converter", author = "Elgenedy, \{Mohamed A.\} and Ahmed, \{Khaled Hani\} and Aboushady, \{Ahmed A.\} and Ibrahim Abdelsalam", year = "2020", month = nov, day = "6", doi = "10.1049/iet-pel.2020.0054", language = "English", volume = "13", pages = "3294 -- 3304", journal = "IET Power Electronics", issn = "1755-4535", publisher = "John Wiley \& Sons Inc.", number = "15", } . IET Power Electronics.

Mohamed A. Elgenedy, Khaled Hani Ahmed, Ahmed A. Aboushady, Ibrahim Abdelsalam(2020). DC–DC converter concept allowing line commutated converters and voltage source converters based HVDC systems connectivity . IET Power Electronics. 13. (15). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 3294--3304. Institution of Engineering and Technology ({IET})

Current-source single-phase module integrated inverters for PV grid-connected applications @article{4051a3c9283447209b1dc823d9dc1de8, title = "Current-source single-phase module integrated inverters for PV grid-connected applications", abstract = "This paper presents a modular grid-connected single-phase system based on series-connected current-source module integrated converters (MICs). The modular configuration improves the reliability, redundancy and scalability of photovoltaic (PV) distributed generators. In this system, each PV panel is connected to a dc/ac inverter to permit individual Maximum Power Point Tracking (MPPT) operation for each panel. Thus, the harvested power from the PV system will increase significantly. There are four different inverter topologies suitable to be used as MICs with different performances in terms of filtering elements size, power losses, efficiency, output voltage range, and high frequency transformers' size. For the MPPT control, the oscillating even order harmonic components should be eliminated from the inverter's input side otherwise the maximum power cannot be extracted. The proposed modulation scheme in this paper will ease the control of inverter's input and output sides. Therefore, the 2nd order harmonic in the input current can be eliminated without adding new active semiconductor switches. A repetitive controller coupled with proportional-resonant controllers are employed to achieve accurate tracking for grid side as well as input side currents. Comparisons and performance evaluations for the proposed MICs are presented and validated with 1 kVA prototype controlled by TMS320F29335 DSP.", keywords = "cuk converter, photovoltaic generation, power decoupling, sepic converter, series-connected", author = "Ahmed Darwish and Saud Alotaibi and Elgenedy, \{Mohamed A.\}", note = "Acceptance in SharePoint (note of date from author). ST 14/09/21 OA article", year = "2020", month = mar, day = "17", doi = "10.1109/ACCESS.2020.2981552", language = "English", volume = "8", pages = "53082--53096", journal = "IEEE Access", issn = "2169-3536", publisher = "Institute of Electrical and Electronics Engineers Inc.", } . IEEE Access.

Current-source single-phase module integrated inverters for PV grid-connected applications @article{f26dc4849f14449c88591adcc0063d40, title = "Current-source single-phase module integrated inverters for PV grid-connected applications", abstract = "This paper presents a modular grid-connected single-phase system based on series-connected current-source module integrated converters (MICs). The modular configuration improves the reliability, redundancy and scalability of photovoltaic (PV) distributed generators. In this system, each PV panel is connected to a dc/ac inverter to permit individual Maximum Power Point Tracking (MPPT) operation for each panel. Thus, the harvested power from the PV system will increase significantly. There are four different inverter topologies suitable to be used as MICs with different performances in terms of filtering elements size, power losses, efficiency, output voltage range, and high frequency transformers' size. For the MPPT control, the oscillating even order harmonic components should be eliminated from the inverter's input side otherwise the maximum power cannot be extracted. The proposed modulation scheme in this paper will ease the control of inverter's input and output sides. Therefore, the 2nd order harmonic in the input current can be eliminated without adding new active semiconductor switches. A repetitive controller coupled with proportional-resonant controllers are employed to achieve accurate tracking for grid side as well as input side currents. Comparisons and performance evaluations for the proposed MICs are presented and validated with 1 kVA prototype controlled by TMS320F29335 DSP.", keywords = "cuk converter, photovoltaic generation, power decoupling, sepic converter, series-connected", author = "Ahmed Darwish and Saud Alotaibi and Elgenedy, \{Mohamed A.\}", note = "{\textcopyright} 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.", year = "2020", month = mar, day = "17", doi = "10.1109/ACCESS.2020.2981552", language = "English", volume = "8", pages = "53082--53096", journal = "IEEE Access", issn = "2169-3536", publisher = "Institute of Electrical and Electronics Engineers Inc.", } . IEEE Access.

Current-source single-phase module integrated inverters for PV grid-connected applications @article{0929373721b44562ad3f1ae05acecaa4, title = "Current-source single-phase module integrated inverters for PV grid-connected applications", abstract = "This paper presents a modular grid-connected single-phase system based on series-connected current-source module integrated converters (MICs). The modular configuration improves the reliability, redundancy and scalability of photovoltaic (PV) distributed generators. In this system, each PV panel is connected to a dc/ac inverter to permit individual Maximum Power Point Tracking (MPPT) operation for each panel. Thus, the harvested power from the PV system will increase significantly. There are four different inverter topologies suitable to be used as MICs with different performances in terms of filtering elements size, power losses, efficiency, output voltage range, and high frequency transformers' size. For the MPPT control, the oscillating even order harmonic components should be eliminated from the inverter's input side otherwise the maximum power cannot be extracted. The proposed modulation scheme in this paper will ease the control of inverter's input and output sides. Therefore, the 2nd order harmonic in the input current can be eliminated without adding new active semiconductor switches. A repetitive controller coupled with proportional-resonant controllers are employed to achieve accurate tracking for grid side as well as input side currents. Comparisons and performance evaluations for the proposed MICs are presented and validated with 1 kVA prototype controlled by TMS320F29335 DSP.", keywords = "cuk converter, photovoltaic generation, power decoupling, sepic converter, series-connected", author = "Ahmed Darwish and Saud Alotaibi and Elgenedy, \{Mohamed A.\}", note = "{\textcopyright} 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.", year = "2020", month = mar, day = "17", doi = "10.1109/ACCESS.2020.2981552", language = "English", volume = "8", pages = "53082--53096", journal = "IEEE Access", issn = "2169-3536", publisher = "IEEE", } . IEEE Access.

Assessment of multi-use offshore platforms: structure classification and design challenges @article{0be962e6d53447c7892b97b512b2cff7, title = "Assessment of multi-use offshore platforms: structure classification and design challenges", abstract = "As the world continues to experience problems including lack of seafood and high energy demands, this paper provides assessment for integrated multi-use offshore (MUP) platforms as a step towards exploiting open seawater in a sustainable way to harvest food and energy. The paper begins with background about MUP, what is MUP and why. The potential energy technologies which can be involved in an offshore platform are introduced with addressing similar applications all over the world. The paper presented the state of the art of MUP structures on the light of EU funded programs. MUP would have a positive impact on various marine activities such as tourism, aquaculture, transport, oil and gas and leisure. However, there are concerns about the negative impact of MUP on the marine environment and ecosystem. Building an MUP with 100\% renewable energy resources still a challenge as large storage capacity must be considered with a well-designed control system. However, marine bio-mass would play a vital role in reducing battery size and improving power supply reliability. DC-systems have never been considered for offshore platforms which could be a better alternative as a simpler control system required with lower costs, lower distribution losses and increased system efficiency, so studying the feasibility of using DC-systems for MUP is required.", keywords = "multi-use platform, aquaculture, offshore, energy", author = "Nassar, \{Walid M.\} and Olimpo Anaya-Lara and Ahmed, \{Khaled H.\} and David Campos-Gaona and Mohamed Elgenedy", note = "M1 - 1860", year = "2020", month = mar, day = "1", doi = "10.3390/su12051860", language = "English", volume = "12", journal = "Sustainability", issn = "2071-1050", publisher = "MDPI", number = "5", } . Sustainability.

Assessment of multi-use offshore platforms @article{dc3154f491af42888c09fdc09d13fef5, title = "Assessment of multi-use offshore platforms: structure classification and design challenges", abstract = "As the world continues to experience problems including a lack of seafood and high energy demands, this paper provides an assessment for integrated multi-use offshore platforms (MUPs) as a step towards exploiting open seawater in a sustainable way to harvest food and energy. The paper begins with background about MUPs, including information regarding what an MUP is and why it is used. The potential energy technologies that can be involved in an offshore platform are introduced while addressing similar applications all over the world. The paper presents the state of the art of MUP structures on the light of EU-funded programs. An MUP would have a positive impact on various marine activities such as tourism, aquaculture, transport, oil and gas and leisure. However, there are concerns about the negative impact of MUPs on the marine environment and ecosystem. Building an MUP with 100\% renewable energy resources is still a challenge because a large storage capacity must be considered with a well-designed control system. However, marine bio-mass would play a vital role in reducing battery size and improving power supply reliability. Direct Current (DC) systems have never been considered for offshore platforms, but they could be a better alternative as a simpler control system that requires with lower costs, has lower distribution losses, and has an increased system efficiency, so studying the feasibility of using DC systems for MUPs is required.", keywords = "multi-use platform, aquaculture, offshore, energy", author = "Nassar, \{Walid M.\} and Olimpo Anaya-Lara and Ahmed, \{Khaled H.\} and David Campos-Gaona and Mohamed Elgenedy", year = "2020", month = mar, day = "1", doi = "10.3390/su12051860", language = "English", volume = "12", journal = "Sustainability", issn = "2071-1050", publisher = "MDPI AG", number = "5", } . Sustainability.

Assessment of multi-use offshore platforms: structure classification and design challenges @article{2d0e51c89e9447bfb67bd2e5019d402a, title = "Assessment of multi-use offshore platforms: structure classification and design challenges", abstract = "As the world continues to experience problems including a lack of seafood and high energy demands, this paper provides an assessment for integrated multi-use offshore platforms (MUPs) as a step towards exploiting open seawater in a sustainable way to harvest food and energy. The paper begins with background about MUPs, including information regarding what an MUP is and why it is used. The potential energy technologies that can be involved in an offshore platform are introduced while addressing similar applications all over the world. The paper presents the state of the art of MUP structures on the light of EU-funded programs. An MUP would have a positive impact on various marine activities such as tourism, aquaculture, transport, oil and gas and leisure. However, there are concerns about the negative impact of MUPs on the marine environment and ecosystem. Building an MUP with 100\% renewable energy resources is still a challenge because a large storage capacity must be considered with a well-designed control system. However, marine bio-mass would play a vital role in reducing battery size and improving power supply reliability. Direct Current (DC) systems have never been considered for offshore platforms, but they could be a better alternative as a simpler control system that requires with lower costs, has lower distribution losses, and has an increased system efficiency, so studying the feasibility of using DC systems for MUPs is required.", keywords = "multi-use platform, aquaculture, offshore, energy", author = "Nassar, \{Walid M.\} and Olimpo Anaya-Lara and Ahmed, \{Khaled H.\} and David Campos-Gaona and Mohamed Elgenedy", note = "Acceptance from webpage OA journal", year = "2020", month = mar, doi = "10.3390/su12051860", language = "English", volume = "12", journal = "Sustainability", issn = "2071-1050", publisher = "MDPI", number = "5", } . Sustainability.

Darwish, A., Alotaibi, S., Elgenedy, M.A.(2020). Current-Source Single-Phase Module Integrated Inverters for PV Grid-Connected Applications . IEEE Access. 8. Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 53082-53096.

Mohamed A. Elgenedy, Ahmed Darwish, Saud Alotaibi(2020). Current-Source Single-Phase Module Integrated Inverters for PV Grid-Connected Applications . IEEE Access. 8. Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 53082--53096. Institute of Electrical and Electronics Engineers ({IEEE})

Nassar, W.M., Anaya-Lara, O., Ahmed, K.H., Campos-Gaona, D., Elgenedy, M.(2020). Assessment of multi-use offshore platforms: Structure classification and design challenges . Sustainability (Switzerland). 12. (5). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 1-23.

Elgenedy, M.A., Ahmed, K.H., Aboushady, A.A., Abdelsalam, I.(2020). DC–DC converter concept allowing line commutated converters and voltage source converters based HVDC systems connectivity . IET Power Electronics. 13. (15). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 3294-3304.

A modular multilevel voltage-boosting Marx pulse-waveform generator for electroporation applications @article{31f0407b6adf456492e6eecadf6dddea, title = "A modular multilevel voltage-boosting Marx pulse-waveform generator for electroporation applications", abstract = "In order to overcome the limitations of the existing classical and solid-state Marx pulse generators, this paper proposes a new modular multilevel voltage-boosting Marx pulse generator (BMPG). The proposed BMPG has hardware features that allow modularity, redundancy, and scalability as well as operational features that alleviate the need of series-connected switches and allows generation of a wide range of pulse waveforms. In the BMPG, a controllable, low-voltage input boost converter supplies, via directing/blocking (D/B) diodes, two arms of a series modular multilevel converter half-bridge sub-modules (HB-SMs). At start up, all the arm's SM capacitors are resonantly charged in parallel from 0 V, simultaneously via directing diodes, to a voltage in excess of the source voltage. After the first pulse delivery, the energy of the SM capacitors decreases due to the generated pulse. Then, for continuous operation without fully discharging the SM capacitors or having a large voltage droop as in the available Marx generators, the SM capacitors are continuously recharged in parallel, to the desired boosted voltage level. Because all SMs are parallelly connected, the boost converter duty ratio is controlled by a single voltage measurement at the output terminals of the boost converter. Due to the proposed SMs structure and the utilization of D/B diodes, each SM capacitor is effectively controlled individually without requiring a voltage sensor across each SM capacitor. Generation of the commonly used pulse waveforms in electroporation applications is possible, while assuring balanced capacitors, hence SM voltages. The proposed BMPG has several topological variations such as utilizing a buck-boost converter at the input stage and replacing the HB-SM with full-bridge SMs. The proposed BMPG topology is assessed by simulation and scaled-down proof-of-concept experimentation to explore its viability for electroporation applications.", keywords = "capacitors, pulse generation, voltage measurements, electric fields, biomembranes, topology, modular multilevel converter (MMC), pulse generator (PG), buck-boost, voltage boosting, Boost, high voltage (HV), pulsed electric field, electroporation, Marx generator", author = "Elgenedy, \{Mohamed A.\} and Massoud, \{Ahmed M.\} and Shehab Ahmed and Williams, \{Barry W.\} and McDonald, \{Jim R.\}", note = "Acceptance in SharePoint (note of date from author). ST 14/09/21 Only MM/YYYY available for publication date, used last date in month. ST 09/09/21 AAM: no embargo", year = "2019", month = nov, day = "30", doi = "10.1109/TPEL.2019.2899974", language = "English", volume = "34", pages = "10575--10589", journal = "IEEE Transactions on Power Electronics", issn = "0885-8993", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "11", } . IEEE Transactions on Power Electronics.

A modular multilevel voltage-boosting Marx pulse-waveform generator for electroporation applications @article{8a946723104f48b7b54e2805eeb847c1, title = "A modular multilevel voltage-boosting Marx pulse-waveform generator for electroporation applications", abstract = "In order to overcome the limitations of the existing classical and solid-state Marx pulse generators, this paper proposes a new modular multilevel voltage-boosting Marx pulse generator (BMPG). The proposed BMPG has hardware features that allow modularity, redundancy, and scalability as well as operational features that alleviate the need of series-connected switches and allows generation of a wide range of pulse waveforms. In the BMPG, a controllable, low-voltage input boost converter supplies, via directing/blocking (D/B) diodes, two arms of a series modular multilevel converter half-bridge sub-modules (HB-SMs). At start up, all the arm's SM capacitors are resonantly charged in parallel from 0 V, simultaneously via directing diodes, to a voltage in excess of the source voltage. After the first pulse delivery, the energy of the SM capacitors decreases due to the generated pulse. Then, for continuous operation without fully discharging the SM capacitors or having a large voltage droop as in the available Marx generators, the SM capacitors are continuously recharged in parallel, to the desired boosted voltage level. Because all SMs are parallelly connected, the boost converter duty ratio is controlled by a single voltage measurement at the output terminals of the boost converter. Due to the proposed SMs structure and the utilization of D/B diodes, each SM capacitor is effectively controlled individually without requiring a voltage sensor across each SM capacitor. Generation of the commonly used pulse waveforms in electroporation applications is possible, while assuring balanced capacitors, hence SM voltages. The proposed BMPG has several topological variations such as utilizing a buck-boost converter at the input stage and replacing the HB-SM with full-bridge SMs. The proposed BMPG topology is assessed by simulation and scaled-down proof-of-concept experimentation to explore its viability for electroporation applications.", keywords = "capacitors, pulse generation, voltage measurements, electric fields, biomembranes", author = "Elgenedy, \{Mohamed A.\} and Ahmed Massoud and Shehab Ahmed and Williams, \{Barry W.\} and McDonald, \{Jim R.\}", note = "{\textcopyright} 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.", year = "2019", month = nov, day = "1", doi = "10.1109/TPEL.2019.2899974", language = "English", volume = "34", pages = "10575--10589", journal = "IEEE Transactions on Power Electronics", issn = "0885-8993", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "11", } . IEEE Transactions on Power Electronics.

A modular multilevel voltage-boosting Marx pulse-waveform generator for electroporation applications @article{f227b7bd2b74484eb3ca0eae0fe49aca, title = "A modular multilevel voltage-boosting Marx pulse-waveform generator for electroporation applications", abstract = "In order to overcome the limitations of the existing classical and solid-state Marx pulse generators, this paper proposes a new modular multilevel voltage-boosting Marx pulse generator (BMPG). The proposed BMPG has hardware features that allow modularity, redundancy, and scalability as well as operational features that alleviate the need of series-connected switches and allows generation of a wide range of pulse waveforms. In the BMPG, a controllable, low-voltage input boost converter supplies, via directing/blocking (D/B) diodes, two arms of a series modular multilevel converter half-bridge sub-modules (HB-SMs). At start up, all the arm's SM capacitors are resonantly charged in parallel from 0 V, simultaneously via directing diodes, to a voltage in excess of the source voltage. After the first pulse delivery, the energy of the SM capacitors decreases due to the generated pulse. Then, for continuous operation without fully discharging the SM capacitors or having a large voltage droop as in the available Marx generators, the SM capacitors are continuously recharged in parallel, to the desired boosted voltage level. Because all SMs are parallelly connected, the boost converter duty ratio is controlled by a single voltage measurement at the output terminals of the boost converter. Due to the proposed SMs structure and the utilization of D/B diodes, each SM capacitor is effectively controlled individually without requiring a voltage sensor across each SM capacitor. Generation of the commonly used pulse waveforms in electroporation applications is possible, while assuring balanced capacitors, hence SM voltages. The proposed BMPG has several topological variations such as utilizing a buck-boost converter at the input stage and replacing the HB-SM with full-bridge SMs. The proposed BMPG topology is assessed by simulation and scaled-down proof-of-concept experimentation to explore its viability for electroporation applications.", keywords = "capacitors, pulse generation, voltage measurements, electric fields, biomembranes", author = "Elgenedy, \{Mohamed A.\} and Massoud, \{Ahmed M.\} and Shehab Ahmed and Williams, \{Barry W.\} and McDonald, \{Jim R.\}", note = "{\textcopyright} 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. M1 - 8643407", year = "2019", month = nov, day = "1", doi = "10.1109/TPEL.2019.2899974", language = "English", volume = "34", pages = "10575--10589", journal = "IEEE Transactions on Power Electronics", issn = "0885-8993", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "11", } . IEEE Transactions on Power Electronics.

Mohamed A. Elgenedy, Ahmed M. Massoud, Shehab Ahmed, Barry W. Williams, Jim R. McDonald(2019). A Modular Multilevel Voltage-Boosting Marx Pulse-Waveform Generator for Electroporation Applications . IEEE Transactions on Power Electronics. Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 1--1. Institute of Electrical and Electronics Engineers ({IEEE})

High-voltage pulse generator using sequentially charged full-bridge modular multilevel converter sub-modules, for water treatment applications @article{4f09ed0bb09c4e1c8568bffb5e2b9065, title = "High-voltage pulse generator using sequentially charged full-bridge modular multilevel converter sub-modules, for water treatment applications", abstract = "This paper proposes a new high-voltage pulse generator (PG) fed from a low-voltage DC supply Vs, which charges one arm of N series-connected full-bridge (FB) modular multilevel converter (MMC) sub-module (SM) capacitors sequentially, through a resistive-inductive branch. By utilising FB-SMs, the proposed PG is able to generate bipolar rectangular pulses of peak NVs and unipolar rectangular pulses of either polarity, at high repetition rates. Asymmetrical pulses are also possible. The proposed topology is assessed via simulation and scaled-down experimentation, which establish the viability of the topology for water treatment applications.", keywords = "high voltage pulse generator, water treatment, water disinfection, pulsed power supplies, pulse generators", author = "Elgenedy, \{Mohamed A.\} and Ahmed Massoud and Derrick Holliday and Ahmed, \{Shehab Ahmed\} and Williams, \{Barry W.\}", year = "2019", month = jun, day = "17", doi = "10.1049/joe.2018.8054", language = "English", pages = "4537--4544", journal = "The Journal of Engineering", issn = "2051-3305", publisher = "Institution of Engineering and Technology", number = "17", } . The Journal of Engineering.

High-voltage pulse generator using sequentially charged full-bridge modular multilevel converter Sub-modules, for water treatment applications @article{0d60ba5a39404037bbad4d6a293f11f7, title = "High-voltage pulse generator using sequentially charged full-bridge modular multilevel converter Sub-modules, for water treatment applications", abstract = "This paper proposes a new high-voltage pulse generator (PG) fed from a low-voltage DC supply Vs, which charges one arm of N series-connected full-bridge (FB) modular multilevel converter (MMC) sub-module (SM) capacitors sequentially, through a resistive-inductive branch. By utilising FB-SMs, the proposed PG is able to generate bipolar rectangular pulses of peak NVs and unipolar rectangular pulses of either polarity, at high repetition rates. Asymmetrical pulses are also possible. The proposed topology is assessed via simulation and scaled-down experimentation, which establish the viability of the topology for water treatment applications.", keywords = "high voltage pulse generator, water treatment, water disinfection, pulsed power supplies, pulse generators", author = "Elgenedy, \{Mohamed A.\} and Ahmed Massoud and Derrick Holliday and Shehab Ahmed and Williams, \{Barry W.\}", year = "2019", month = jun, day = "17", doi = "10.1049/joe.2018.8054", language = "English", volume = "2", pages = "4537--4544", journal = "IET The Journal of Engineering", issn = "2051-3305", publisher = "Institution of Engineering and Technology (IET)", number = "17", } . IET The Journal of Engineering.

Mohamed A. Elgenedy, Ahmed Massoud, Derrick Holliday, Shehab Ahmed, Barry W. Williams(2019). High‐voltage pulse generator using sequentially charged full‐bridge modular multilevel converter Sub‐modules, for water treatment applications . The Journal of Engineering. 2019. (17). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 4537--4544. Institution of Engineering and Technology ({IET})

High-voltage pulse generator using sequentially charged full-bridge modular multilevel converter Sub-modules, for water treatment applications @article{ff8fdd0ae8a743e3bf8a386ff0f8b204, title = "High-voltage pulse generator using sequentially charged full-bridge modular multilevel converter Sub-modules, for water treatment applications", abstract = "This paper proposes a new high-voltage pulse generator (PG) fed from a low-voltage DC supply Vs, which charges one arm of N series-connected full-bridge (FB) modular multilevel converter (MMC) sub-module (SM) capacitors sequentially, through a resistive-inductive branch. By utilising FB-SMs, the proposed PG is able to generate bipolar rectangular pulses of peak NVs and unipolar rectangular pulses of either polarity, at high repetition rates. Asymmetrical pulses are also possible. The proposed topology is assessed via simulation and scaled-down experimentation, which establish the viability of the topology for water treatment applications.", keywords = "high voltage pulse generator, water treatment, water disinfection, pulsed power supplies, pulse generators, HVDC power convertors, power capacitors, water treatment applications, PG, low-voltage DC supply, bipolar rectangular pulse, unipolar rectangular pulse, resistive-inductive branch, FB-SM, capacitor, full-bridge modular multilevel converter sub-modules", author = "Elgenedy, \{Mohamed A.\} and Ahmed Massoud and Derrick Holliday and Shehab Ahmed and Williams, \{Barry W.\}", note = "Acceptance from VoR OA article", year = "2019", month = jun, doi = "10.1049/joe.2018.8054", language = "English", volume = "2019", pages = "4537--4544", journal = "Journal of Engineering", issn = "2051-3305", publisher = " Institution of Engineering and Technology (IET)", number = "17", } . Journal of Engineering.

High-voltage pulse generator based on sequentially charged MMC-SMs operating in a voltage-boost mode @article{5753b54ea87e4a6eaf5b6809a51a5a0c, title = "High-voltage pulse generator based on sequentially charged MMC-SMs operating in a voltage-boost mode", abstract = "Pulse forming networks and Marx generators are the classical rectangular waveform pulse generators (PGs). They are inflexible and their capacitors must be fully charged to the required voltage from 0V before delivering each high-voltage (HV) pulse. They are only able to generate unipolar pulses; if bipolar pulses are sought another generator fed from a negative supply voltage is added. Recently, several power electronics based PGs have been proposed. This paper presents an HV power electronics based PG, which is based on Half-Bridge Modular Multilevel Converter (HB-MMC) sub-modules (SMs) charged sequentially in a voltage boost mode. Each SM capacitor and main switch form a boost converter with the charging input supply and inductor. As a result, all SM capacitors are charged to a voltage greater than the input. During the discharging process the SM capacitors are connected in series, producing a rectangular HV pulse across the load. The proposed charging method allows a reduction in the converter footprint in comparison with recently proposed MMC sequentially charged PG topologies. Although only rectangular pulse waveforms are sought in this paper, a SM capacitor voltage balance method allows multilevel pulse generation. The viability of the proposed converter is confirmed by MATLAB/Simulink simulation and scaled-down experimentation.", keywords = "high voltage pulse generator, sub-modules, SM capacitors, convertor", author = "Elgenedy, \{Mohamed A.\} and Ahmed Darwish and Shehab Ahmed and Williams, \{Barry W.\} and McDonald, \{Jim R.\}", note = "This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library.", year = "2019", month = apr, day = "10", doi = "10.1049/iet-pel.2018.5438", language = "English", volume = "12", pages = "749 – 758", journal = "IET Power Electronics", issn = "1755-4535", publisher = "John Wiley \& Sons Inc.", number = "4", } . IET Power Electronics.

High-voltage pulse generator based on sequentially charged MMC-SMs operating in a voltage-boost mode @article{3d125d35731048d48c4fc1113b1390ce, title = "High-voltage pulse generator based on sequentially charged MMC-SMs operating in a voltage-boost mode", abstract = "Pulse forming networks and Marx generators are the classical rectangular waveform pulse generators (PGs). They are inflexible and their capacitors must be fully charged to the required voltage from 0 V before delivering each high-voltage (HV) pulse. They are only able to generate unipolar pulses; if bipolar pulses are sought another generator fed from a negative supply voltage is added. Recently, several power electronics based PGs have been proposed. This study presents an HV power electronics based PG, which is based on half-bridge modular multilevel converter (MMC) sub-modules (SMs) charged sequentially in a voltage-boost mode. Each SM capacitor and main switch form a boost converter with the charging input supply and inductor. As a result, all SM capacitors are charged to a voltage greater than the input. During the discharging process, the SM capacitors are connected in series, producing a rectangular HV pulse across the load. The proposed charging method allows a reduction in the converter footprint in comparison with recently proposed MMC sequentially charged PG topologies. Although only rectangular pulse waveforms are sought in this study, an SM-capacitor voltage balance method allows multilevel pulse generation. The viability of the proposed converter is confirmed by MATLAB/Simulink simulation and scaled-down experimentation.", keywords = "high voltage pulse generator, sub-modules, SM capacitors, convertor", author = "Elgenedy, \{Mohamed A.\} and Ahmed Darwish and Shehab Ahmed and Williams, \{Barry W.\} and McDonald, \{Jim R.\}", note = "Acceptance from webpage OA article Sherpa listed as DOAJ and CC BY. ST 09/09/21", year = "2019", month = apr, day = "1", doi = "10.1049/iet-pel.2018.5438", language = "English", volume = "12", pages = "749 – 758", journal = "IET Power Electronics", issn = "1755-4535", publisher = "John Wiley \& Sons Inc.", number = "4", } . IET Power Electronics.

Mohamed A. Elgenedy, Ahmed Darwish, Shehab Ahmed, Barry W. Williams, Jim R. McDonald(2019). High‐voltage pulse generator based on sequentially charged MMC‐SMs operating in a voltage‐boost mode . IET Power Electronics. 12. (4). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 749--758. Institution of Engineering and Technology ({IET})

Current-source modular medium-voltage grid-connected system with high-frequency isolation for photovoltaic applications @article{c9b72e8cd6e748d986db44efb815b708, title = "Current-source modular medium-voltage grid-connected system with high-frequency isolation for photovoltaic applications", abstract = "Large-scale grid-connected photovoltaic energy generation systems are progressing remarkably benefiting from the latest developments in solid-state semiconductors technology. In such systems, the photovoltaic arrays can be connected directly to the medium-voltage grid without employing a bulkyline-frequency transformer to step up the voltage. Nanocrystalline cores with a small size and a high permeability operating at medium or high frequency can be installed in the power conversion stage. Hence, the necessary isolation as well as voltage boosting features can be provided. However, only a fewpower converters allow this type of isolation. This paper proposes a new modular converter structure suitable for medium-voltage grid connected systems with high-frequency isolation. The output voltages of the series-connected modules are added in order to provide the necessary voltage boosting. Four different power converter topologies with small input capacitors can be used as submodules for the presented medium-voltage configurationhaving different advantages and drawbacks. These different topologies are analysed in terms of power losses, footprint and functionality. To validate the mathematical analysis and the computer simulations, a scaled-down 5 kVA three-phase, 1 kV prototype is built and tested with four modules for each phase.", keywords = "modular medium-voltage converter, photovoltaic power plants, renewable energy systems", author = "Ahmed Darwish and Elgenedy, \{Mohamed A.\}", note = "{\textcopyright} 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.", year = "2019", month = mar, day = "1", doi = "10.1109/TEC.2018.2876969", language = "English", volume = "34", pages = "255 -- 266", journal = "IEEE Transactions on Energy Conversion", issn = "0885-8969", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "1", } . IEEE Transactions on Energy Conversion.

A step-up modular high-voltage pulse generator based on isolated input-parallel/output-series voltage-boosting modules and modular multilevel sub-modules @article{e2e363357c614448b281fd1cf316286f, title = "A step-up modular high-voltage pulse generator based on isolated input-parallel/output-series voltage-boosting modules and modular multilevel sub-modules", abstract = "Irreversible electroporation for disinfection applications involve exposing the specimen cell-membrane to a pulsed electric field in order to kill harmful microorganisms. High voltage (HV) pulses, of relatively short durations in range of few micro-seconds, are generated across the sample chamber. The HV pulse specifications such as: voltage magnitude, waveform, repetition rate, and duration differ according to the conditions of the sample being processed. This paper proposes a new step-up power electronic converter topology for generating the required HV pulses from a relatively low input voltage. The converter consists of two main stages; the first stage is responsible for boosting the input voltage to the desired level using input-parallel/output-series connected dc/dc modules while the second stage forms the required HV pulses with the proper magnitude, duration and repetition rate using modular multilevel converter sub-modules. The proposed topology is able to produce the HV pulses with controlled voltage and current stresses across the employed semiconductor switches and diodes, hence, it can be implemented with the market-available semiconductor technology. Mathematical analysis of the proposed topology is developed and MATLAB/Simulink simulation results explore operational conditions. Experimental results from a scaled-down prototype validate the functionality of the proposed system.", keywords = "DC/DC converters, irreversible electroporation, modular multilevel converters, voltage boosting", author = "Ahmed Darwish and Elgenedy, \{Mohamed A.\} and Finney, \{Stephen J.\} and Williams, \{Barry W.\} and McDonald, \{Jim R.\}", note = "(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.", year = "2019", month = mar, day = "1", doi = "10.1109/TIE.2017.2772189", language = "English", volume = "66", pages = "2207--2216", journal = "IEEE Transactions on Industrial Electronics", issn = "0278-0046", publisher = "IEEE Industrial Electronics Society", number = "3", } . IEEE Transactions on Industrial Electronics.

A step-up modular high-voltage pulse generator based on isolated input-parallel/output-series voltage-boosting modules and modular multilevel sub-modules @article{9bdbfe7e35d741b69633a23cef6d45c0, title = "A step-up modular high-voltage pulse generator based on isolated input-parallel/output-series voltage-boosting modules and modular multilevel sub-modules", abstract = "Irreversible electroporation (IRE) for disinfection applications involve exposing the specimen cell membrane to a pulsed electric field in order to kill harmful microorganisms. High-voltage (HV) pulses, of relatively short durations in range of few microseconds, are generated across the sample chamber. The HV pulse specifications such as voltage magnitude, waveform, repetition rate, and duration differ according to the conditions of the sample being processed. This paper proposes a new step-up power electronic converter topology for generating the required HV pulses from a relatively low input voltage. The converter consists of two main stages; the first stage is responsible for boosting the input voltage to the desired level using input-parallel/output-series connected dc/dc modules, while the second stage forms the required HV pulses with the proper magnitude, duration, and repetition rate using modular multilevel converter submodules. The proposed topology is able to produce the HV pulses with controlled voltage and current stresses across the employed semiconductor switches and diodes; hence, it can be implemented with the market-available semiconductor technology. Mathematical analysis of the proposed topology is developed, and MATLAB/Simulink simulation results explore operational conditions. Experimental results from a scaled-down prototype validate the functionality of the proposed system.", keywords = "DC/DC converters, irreversible electroporation, modular multilevel converters (MMCs), pulse waveforms generator, pulsed electric field, voltage boosting", author = "Ahmed Darwish and Elgenedy, \{Mohamed A.\} and Finney, \{Stephen J.\} and Williams, \{Barry W.\} and McDonald, \{Jim R.\}", note = "Acceptance in SharePoint (note of date from author)", year = "2019", month = mar, doi = "10.1109/TIE.2017.2772189", language = "English", volume = "66", pages = "2207--2216", journal = "IEEE Transactions on Industrial Electronics", issn = "0278-0046", publisher = "IEEE Industrial Electronics Society", number = "3", } . IEEE Transactions on Industrial Electronics.

Current-source modular medium-voltage grid-connected system with high-frequency isolation for photovoltaic applications @article{19b59fbf1b6e4e358fba8e35b552cbbe, title = "Current-source modular medium-voltage grid-connected system with high-frequency isolation for photovoltaic applications", abstract = "Large-scale grid-connected photovoltaic energy generation systems are progressing remarkably benefiting from the latest developments in solid-state semiconductors technology. In such systems, the photovoltaic arrays can be connected directly to the medium-voltage grid without employing a bulky line-frequency transformer to step up the voltage. Nano-crystalline cores with a small size and a high permeability operating at medium or high frequency can be installed in the power conversion stage. Hence, the necessary isolation as well as voltage boosting features can be provided. However, only a few power converters allow this type of isolation. This paper proposes a new modular converter structure suitable for medium-voltage grid connected systems with high-frequency isolation. The output voltages of the series-connected modules are added in order to provide the necessary voltage boosting. Four different power converter topologies with small input capacitors can be used as submodules for the presented medium-voltage configuration having different advantages and drawbacks. These different topologies are analyzed in terms of power losses, footprint, and functionality. To validate the mathematical analysis and the computer simulations, a scaled-down 5 kVA three-phase, 1 kV prototype is built and tested with four modules for each phase.", keywords = "modular medium-voltage converter, photovoltaic power plants, renewable energy systems, Modular medium-voltage converter", author = "Ahmed Darwish and Elgenedy, \{Mohamed A.\}", note = "Acceptance in SharePoint (note of date from author)", year = "2019", month = mar, doi = "10.1109/TEC.2018.2876969", language = "English", volume = "34", pages = "255 -- 266", journal = "IEEE Transactions on Energy Conversion", issn = "0885-8969", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "1", } . IEEE Transactions on Energy Conversion.

Mohamed A. Elgenedy, Ahmed Darwish(2019). Current-Source Modular Medium-Voltage Grid-Connected System With High-Frequency Isolation for Photovoltaic Applications . IEEE Transactions on Energy Conversion. 34. (1). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 255--266. Institute of Electrical and Electronics Engineers ({IEEE})

Mohamed A. Elgenedy, Ahmed Darwish, Stephen J. Finney, Barry W. Williams, Jim R. McDonald(2019). A Step-Up Modular High-Voltage Pulse Generator Based on Isolated Input-Parallel/Output-Series Voltage-Boosting Modules and Modular Multilevel Submodules . IEEE Transactions on Industrial Electronics. 66. (3). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 2207--2216. Institute of Electrical and Electronics Engineers ({IEEE})

Elgenedy, M.A., Massoud, A.M., Ahmed, S., Williams, B.W., McDonald, J.R.(2019). A Modular Multilevel Voltage-Boosting Marx Pulse-Waveform Generator for Electroporation Applications . IEEE Transactions on Power Electronics. 34. (11). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 10575-10589.

Darwish, A., Elgenedy, M.A., Finney, S.J., Williams, B.W., McDonald, J.R.(2019). A step-up modular high-voltage pulse generator based on isolated input-parallel/output-series voltage-boosting modules and modular multilevel submodules . IEEE Transactions on Industrial Electronics. 66. (3). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 2207-2216.

Elgenedy, M.A., Darwish, A., Ahmed, S., Williams, B.W., McDonald, J.R.(2019). High-voltage pulse generator based on sequentially charged MMC-SMs operating in a voltage-boost mode . IET Power Electronics. 12. (4). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 749-758.

Darwish, A., Elgenedy, M.A.(2019). Current-source modular medium-voltage grid-connected system with high-frequency isolation for photovoltaic applications . IEEE Transactions on Energy Conversion. 34. (1). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 255-266.

A high voltage pulse generator based on sequentially charged modular multilevel converter submodules operating in a voltage boost mode @article{f218394591c94406bc1c12dd441895c9, title = "A high voltage pulse generator based on sequentially charged modular multilevel converter submodules operating in a voltage boost mode", abstract = "Pulse forming networks and Marx generators are the classical rectangular waveform pulse generators (PGs). They are inflexible and their capacitors must be fully charged to the required voltage from 0V before delivering each high-voltage (HV) pulse. They are only able to generate unipolar pulses; if bipolar pulses are sought another generator fed from a negative supply voltage is added. Recently, several power electronics based PGs have been proposed. This paper presents an HV power electronics based PG, which is based on Half-Bridge Modular Multilevel Converter (HB-MMC) sub-modules (SMs) charged sequentially in a voltage boost mode. Each SM capacitor and main switch form a boost converter with the charging input supply and inductor. As a result, all SM capacitors are charged to a voltage greater than the input. During the discharging process the SM capacitors are connected in series, producing a rectangular HV pulse across the load. The proposed charging method allows a reduction in the converter footprint in comparison with recently proposed MMC sequentially charged PG topologies. Although only rectangular pulse waveforms are sought in this paper, a SM capacitor voltage balance method allows multilevel pulse generation. The viability of the proposed converter is confirmed by MATLAB/Simulink simulation and scaled-down experimentation.", keywords = "high voltage pulse generator, sub-modules, SM capacitors, convertor", author = "Mohamed Elgenedy and Ahmed Darwish and Shehab Ahmed and Barry Williams and Jim McDonald", note = "This paper is a postprint of a paper submitted to and accepted for publication in IET Power Electronics and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library.", year = "2018", month = dec, day = "11", doi = "10.1049/iet-pel.2018.5438", language = "English", journal = "IET Power Electronics", issn = "1755-4535", publisher = "John Wiley \& Sons Inc.", } . IET Power Electronics.

Current-source modular medium-voltage grid-connected system with high-frequency isolation for photovoltaic applications @article{2cb5c61485064cad9c4b4fb64730f4ba, title = "Current-source modular medium-voltage grid-connected system with high-frequency isolation for photovoltaic applications", abstract = "Large-scale grid-connected photovoltaic energy generation systems are progressing remarkably benefiting from the latest developments in solid-state semiconductors technology. In such systems, the photovoltaic arrays can be connected directly to the medium-voltage grid without employing a bulky line-frequency transformer to step up the voltage. Nanocrystalline cores with a small size and a high permeability operating at medium or high frequency can be installed in the power conversion stage. Hence, the necessary isolation as well as voltage boosting features can be provided. However, only a few power converters allow this type of isolation. This paper proposes a new modular converter structure suitable for medium-voltage grid connected systems with high-frequency isolation. The output voltages of the series-connected modules are added in order to provide the necessary voltage boosting. Four different power converter topologies with small input capacitors can be used as submodules for the presented medium-voltage configuration having different advantages and drawbacks. These different topologies are analysed in terms of power losses, footprint and functionality. To validate the mathematical analysis and the computer simulations, a scaled-down 5 kVA three-phase, 1 kV prototype is built and tested with four modules for each phase.", keywords = "modular medium-voltage converter, photovoltaic power plants, renewable energy systems", author = "Ahmed Darwish and Elgenedy, \{Mohamed A.\}", note = "{\textcopyright} 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.", year = "2018", month = oct, day = "19", doi = "10.1109/TEC.2018.2876969", language = "English", journal = "IEEE Transactions on Energy Conversion ", issn = "0885-8969", publisher = "Institute of Electrical and Electronics Engineers Inc.", } . IEEE Transactions on Energy Conversion.

A High-Gain, High-Voltage Pulse Generator Using Sequentially Charged Modular Multilevel Converter Submodules, for Water Disinfection Applications @article{a5dd1c54e3ad415d8087379ee429d82f, title = "A High-Gain, High-Voltage Pulse Generator Using Sequentially Charged Modular Multilevel Converter Submodules, for Water Disinfection Applications", abstract = "Modularity, redundancy and scalability are the key features recently sought in High-Voltage (HV) pulse generators for electroporation applications. Such features are gained by utilizing Modular Multilevel Converter (MMC) Sub-Modules (SMs). In this paper, two arms of MMC Half-Bridge SMs (HB-SMs) are utilized for generating bipolar/unipolar HV pulses for disinfection process in water treatment applications. The HB-SM capacitors are charged sequentially from a low voltage dc input source via a resistive-inductive branch and a reverse blocking switch (which is turned ON/OFF at zero voltage/current conditions). The energy losses of the proposed capacitor charging technique are established mathematically as well as the charging time per SM-capacitor. Therefore, the proposed Sequential Pulse Generator (SPG) is able to generate high repetitive pulse rates with high efficiency regardless the HV level of the pulse. Different characterizations of bipolar rectangular pulses can be generated. The proposed topology is assessed by Matlab/Simulink platform and scaled down experimentation. The results establish the viability of the SPG topology for HV pulse generation for water disinfection applications.", keywords = "MMA, power electronic converter, pulse power systems, electroporation, water treatment, water disinfection, modular multilevel converter", author = "Elgenedy, \{Mohamed A.\} and Massoud, \{Ahmed M.\} and Shehab Ahmed and Williams, \{Barry W.\}", note = "(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.", year = "2018", month = sep, day = "1", doi = "10.1109/JESTPE.2017.2750244", language = "English", volume = "6", pages = "1394 -- 1406", journal = "IEEE Journal of Emerging and Selected Topics in Power Electronics", issn = "2168-6777", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "3", } . IEEE Journal of Emerging and Selected Topics in Power Electronics.

Mohamed A. Elgenedy, Ahmed M. Massoud, Shehab Ahmed, Barry W. Williams(2018). A High-Gain, High-Voltage Pulse Generator Using Sequentially Charged Modular Multilevel Converter Submodules, for Water Disinfection Applications . IEEE Journal of Emerging and Selected Topics in Power Electronics. 6. (3). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 1394--1406. Institute of Electrical and Electronics Engineers ({IEEE})

Elgenedy, M.A., Massoud, A.M., Ahmed, S., Williams, B.W.(2018). A High-Gain, High-Voltage Pulse Generator Using Sequentially Charged Modular Multilevel Converter Submodules, for Water Disinfection Applications . IEEE Journal of Emerging and Selected Topics in Power Electronics. 6. (3). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 1394-1406.

A transition arm modular multilevel universal pulse-waveform generator for electroporation applications @article{7f5e7eff33d34e7fb6098f3b4f11c992, title = "A transition arm modular multilevel universal pulse-waveform generator for electroporation applications", abstract = "High-voltage (HV) pulses are used in electroporation to subject pulsed electric field (PEF) onto a sample under treatment. Pulse-waveform shape, voltage magnitude, pulse duration, and pulse repetition rate are the basic controllable variables required for particular PEF application. In practice, a custom-made pulse generator is dedicated for each PEF application with limited flexibility in changing these variables. In this paper, a universal pulse-waveform generator (UPG) is proposed, where the controller software algorithm can manipulate a basic generated multilevel pulse waveform to emulate many different PEF pulse waveforms. The commonly used PEF HV pulse waveforms can be generated as bipolar or monopolar with controllable pulse durations, repetition times, and voltage magnitudes. The UPG has the ability to generate multilevel pulses that have controllable dv/dt, which allows reduction of the electromagnetic interference generated by the converter. The UPG topology is based on half-bridge modular multilevel converter (HB-MMC) cells forming two transition arms in conjunction with two bistate arms, together creating an H-bridge. The HB-MMC cell capacitors provide a controllable energy source which charge from the dc input supply and discharge across the load, while the two bistate arms allow charging the HB-MMC cell capacitors. Hence, the UPG topology offers modularity, redundancy, and scalability. The HB-MMC individual cell capacitance is low and the cell voltages are balanced by employing the sorting and rotating algorithm used in conventional HB-MMC topologies for HV dc transmission applications. The viability of the proposed UPG converter is validated by MATLAB/Simulink simulation and scaled-down experimentation.", keywords = "Electroporation, high voltage (HV), modular multilevel converters (MMCs), pulse-waveform generator, pulsed electric field (PEF), series-connected insulated-gate bipolar transistors (IGBTs), transition arm", author = "Elgenedy, \{Mohamed A.\} and Ahmed Darwish and Shehab Ahmed and Williams, \{Barry W.\}", note = "Acceptance in SharePoint Only MM/YYYY available for publication date, used last date in month. ST 15/09/21", year = "2017", month = dec, day = "31", doi = "10.1109/TPEL.2017.2653243", language = "English", volume = "32", pages = "8979 -- 8991", journal = "IEEE Transactions on Power Electronics", issn = "0885-8993", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "12", } . IEEE Transactions on Power Electronics.

A transition arm modular multilevel universal pulse-waveform generator for electroporation applications @article{195dea9fd5d440da895144d8796e57c0, title = "A transition arm modular multilevel universal pulse-waveform generator for electroporation applications", abstract = "High voltage (HV) pulses are used in electroporation to subject pulsed electric field (PEF) onto a sample under treatment. Pulse-waveform shape, voltage magnitude, pulse duration, and pulse repetition rate are the basic controllable variables required for particular PEF application. In practice, a custom-made pulse generator is dedicated for each PEF application with limited flexibility in changing these variables. In this paper, a universal pulse-waveform generator (UPG) is proposed, where the controller software-algorithm can manipulate a basic generated multilevel pulse-waveform to emulate many different PEF pulse-waveforms. The commonly used PEF HV pulse-waveforms can be generated as bipolar or monopolar with controllable pulse durations, repetition times, and voltage magnitudes. The UPG has the ability to generate multilevel pulses that have controllable dv/dt which allow reduction of the electromagnetic interference (EMI) generated by the converter. The UPG topology is based on half-bridge modular multilevel converter (HB-MMC) cells forming two transition arms in conjunction with two bi-state arms, together creating an H-bridge. The HB-MMC cell-capacitors provide a controllable energy source which charge from the dc input supply and discharge across the load, while the two bi-state arms allow charging the HB-MMC cell-capacitors. Hence, the UPG topology offers modularity, redundancy, and scalability. The HB-MMC individual cell-capacitance is low and the cell-voltages are balanced by employing the sorting and rotating algorithm used in conventional HB-MMC topologies for HVDC transmission applications. The viability of the proposed UPG converter is validated by MATLAB/Simulink simulation and scaled-down experimentation.", keywords = "MMC, power electronic converter, pulse power systems, electroporation, high voltage, modular multilevel converters, transition arm, pulsed electric fields, pulse-waveforms generator, series connected IGBTs", author = "Elgenedy, \{Mohamed A.\} and Ahmed Darwish and Shehab Ahmed and Williams, \{Barry W.\}", note = "{\textcopyright} 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.", year = "2017", month = dec, day = "1", doi = "10.1109/TPEL.2017.2653243", language = "English", volume = "32", pages = "8979 -- 8991", journal = "IEEE Transactions on Power Electronics", issn = "0885-8993", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "12", } . IEEE Transactions on Power Electronics.

A step-up modular high-voltage pulse generator based on isolated input-parallel/output-series voltage-boosting modules and modular multilevel sub-modules @article{57f43551d6214fa0a52e4f0ccc599ed9, title = "A step-up modular high-voltage pulse generator based on isolated input-parallel/output-series voltage-boosting modules and modular multilevel sub-modules", abstract = "Irreversible electroporation for disinfection applications involve exposing the specimen cell-membrane to a pulsed electric field in order to kill harmful microorganisms. High voltage (HV) pulses, of relatively short durations in range of few micro-seconds, are generated across the sample chamber. The HV pulse specifications such as: voltage magnitude, waveform, repetition rate, and duration differ according to the conditions of the sample being processed. This paper proposes a new step-up power electronic converter topology for generating the required HV pulses from a relatively low input voltage. The converter consists of two main stages; the first stage is responsible for boosting the input voltage to the desired level using input-parallel/output-series connected dc/dc modules while the second stage forms the required HV pulses with the proper magnitude, duration and repetition rate using modular multilevel converter sub-modules. The proposed topology is able to produce the HV pulses with controlled voltage and current stresses across the employed semiconductor switches and diodes, hence, it can be implemented with the market-available semiconductor technology. Mathematical analysis of the proposed topology is developed and MATLAB/Simulink simulation results explore operational conditions. Experimental results from a scaled-down prototype validate the functionality of the proposed system.", keywords = "DC/DC converters, irreversible electroporation, modular multilevel converters, voltage boosting", author = "Ahmed Darwish and Elgenedy, \{Mohamed A.\} and Finney, \{Stephen J.\} and Williams, \{Barry W.\} and McDonald, \{Jim R.\}", year = "2017", month = nov, day = "13", doi = "10.1109/TIE.2017.2772189", language = "English", volume = "66", pages = "2207--2216", journal = "IEEE Transactions on Industrial Electronics", issn = "0278-0046", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "3", } . IEEE Transactions on Industrial Electronics.

Full-Bridge Modular Multilevel Submodule-Based High-Voltage Bipolar Pulse Generator With Low-Voltage DC, Input for Pulsed Electric Field Applications @article{502a27bb400541b6bade27663fdbd8f1, title = "Full-Bridge Modular Multilevel Submodule-Based High-Voltage Bipolar Pulse Generator With Low-Voltage DC, Input for Pulsed Electric Field Applications", abstract = "High voltage (HV) pulse generators (PGs) are the core of pulsed electric field applications. Applying HV pulses produces electrical pores in a biological cell membrane, in which if the size of the pores increases beyond a critical size, the cell will not survive. This paper proposes a new HV-PG, based on the modular multilevel converter with full-bridge sub-modules (FB-SMs). In order to alleviate the need of complicated sensorless or sensor based voltage balancing techniques for the FB-SM capacitors, a dedicated self-regulating charging circuit is connected across each FB-SM capacitor. The individual capacitor charging voltage-level is obtained from three successive stages namely: convert the low-voltage DC input voltage to a high-frequency square AC voltage; increase the AC voltage-level via a nano-crystalline step-up transformer; and rectify the secondary transformer AC voltage via a diode full-bridge rectifier. The HV bipolar pulses are formed across the load in a fourth stage through series connected FB-SMs. The flexibility of inserting and bypassing the FB-SM capacitors, allows the proposed topology to generate different pulse-waveform shapes, including rectangular waveforms with specifically reduced dv/dt and ramp pulses. The practical results, from a scaled down experimental rig with five FB-SMs and a 1kV peak to peak pulse output, validate the proposed topology.", keywords = "MMC, electroporation, power electronic converter, HVDC, pulsed electric field, pulse power systems", author = "Ibrahim Abdelsalam and Elgenedy, \{Mohamed A.\} and Shehab Ahmed and Williams, \{Barry W.\}", note = "(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.", year = "2017", month = oct, day = "1", doi = "10.1109/TPS.2017.2743822", language = "English", volume = "45", pages = " 2857 -- 2864", journal = "IEEE Transactions on Plasma Science", issn = "0093-3813", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "10", } . IEEE Transactions on Plasma Science.

Mohamed A. Elgenedy, Ibrahim Abdelsalam, Shehab Ahmed, Barry W. Williams(2017). Full-Bridge Modular Multilevel Submodule-Based High-Voltage Bipolar Pulse Generator With Low-Voltage DC, Input for Pulsed Electric Field Applications . IEEE Transactions on Plasma Science. 45. (10). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 2857--2864. Institute of Electrical and Electronics Engineers ({IEEE})

Full-bridge modular multilevel submodule-based high-voltage bipolar pulse generator with low-voltage DC, input for pulsed electric field applications @article{59318870c9ee4ebe8c6bf9628e402489, title = "Full-bridge modular multilevel submodule-based high-voltage bipolar pulse generator with low-voltage DC, input for pulsed electric field applications", abstract = "High-voltage (HV) pulse generators (PGs) are the core of pulsed electric field applications. Applying HV pulses produces electrical pores in a biological cell membrane, in which if the size of the pores increases beyond a critical size, the cell will not survive. This paper proposes a new HV-PG based on the modular multilevel converter with full-bridge submodules (FB-SMs). In order to alleviate the need of complicated sensorless or sensor-based voltage balancing techniques for the FB-SM capacitors, a dedicated self-regulating charging circuit is connected across each FB-SM capacitor. The individual capacitor charging voltage level is obtained from three successive stages, namely, convert the low-voltage dc input voltage to a high-frequency square ac voltage, increase the ac voltage level via a nanocrystalline step-up transformer, and rectify the secondary transformer ac voltage via a diode FB rectifier. The HV bipolar pulses are formed across the load in a fourth stage through series connected FB-SMs. The flexibility of inserting and bypassing the FB-SM capacitors allows the proposed topology to generate different pulse-waveform shapes, including rectangular waveforms with specifically reduced dv/dt and ramp pulses. The practical results, from a scaled-down experimental rig with five FB-SMs and a 1-kV peak-to-peak pulse output, validate the proposed topology.", keywords = "modular multilevel converters (MMCs), electroporation, power electronic converter, HVDC, pulsed electric field, pulse power systems, high-voltage bipolar pulses", author = "Ibrahim Abdelsalam and Elgenedy, \{Mohamed A.\} and Shehab Ahmed and Williams, \{Barry W.\}", note = "Acceptance in SharePoint (note of date from author)", year = "2017", month = oct, doi = "10.1109/TPS.2017.2743822", language = "English", volume = "45", pages = "2857 -- 2864", journal = "IEEE Transactions on Plasma Science", issn = "0093-3813", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "10", } . IEEE Transactions on Plasma Science.

A high-gain, high-voltage pulse generator using sequentially-charged modular multilevel converter sub-modules, for water disinfection applications @article{687f2afdcbbd412390b909f81218e1cd, title = "A high-gain, high-voltage pulse generator using sequentially-charged modular multilevel converter sub-modules, for water disinfection applications", abstract = "Modularity, redundancy and scalability are the key features recently sought in High-Voltage (HV) pulse generators for electroporation applications. Such features are gained by utilizing Modular Multilevel Converter (MMC) Sub-Modules (SMs). In this paper, two arms of MMC Half-Bridge SMs (HB-SMs) are utilized for generating bipolar/unipolar HV pulses for disinfection process in water treatment applications. The HB-SM capacitors are charged sequentially from a low voltage dc input source via a resistive-inductive branch and a reverse blocking switch (which is turned ON/OFF at zero voltage/current conditions). The energy losses of the proposed capacitor charging technique are established mathematically as well as the charging time per SM-capacitor. Therefore, the proposed Sequential Pulse Generator (SPG) is able to generate high repetitive pulse rates with high efficiency regardless the HV level of the pulse. Different characterizations of bipolar rectangular pulses can be generated. The proposed topology is assessed by Matlab/Simulink platform and scaled down experimentation. The results establish the viability of the SPG topology for HV pulse generation for water disinfection applications.", keywords = "MMA, power electronic converter, pulse power systems, electroporation, water treatment, water disinfection, modular multilevel converter", author = "Elgenedy, \{Mohamed A.\} and Massoud, \{Ahmed M.\} and Shehab Ahmed and Williams, \{Barry W.\}", note = "(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.", year = "2017", month = sep, day = "8", doi = "10.1109/JESTPE.2017.2750244", language = "English", pages = "1--13", journal = "IEEE Journal of Emerging and Selected Topics in Power Electronics", issn = "2168-6777", publisher = "Institute of Electrical and Electronics Engineers Inc.", } . IEEE Journal of Emerging and Selected Topics in Power Electronics.

A high-gain, high-voltage pulse generator using sequentially charged modular multilevel converter submodules, for water disinfection applications @article{2d27ba87fd904f5fa3b5da0aa8ad1476, title = "A high-gain, high-voltage pulse generator using sequentially charged modular multilevel converter submodules, for water disinfection applications", abstract = "Modularity, redundancy, and scalability are the key features recently sought in high-voltage (HV) pulse generators (PGs) for electroporation applications. Such features are gained by utilizing modular multilevel converter (MMC) submodules (SMs). In this paper, two arms of MMC half-bridge SMs (HB-SMs) are utilized for generating bipolar/unipolar HV pulses for disinfection process in water treatment applications. The HB-SM capacitors are charged sequentially from a low-voltage dc input source via a resistive-inductive branch and a reverse-blocking switch (which is turned ON/OFF at zero voltage/current conditions). The energy losses of the proposed capacitor charging technique are established mathematically as well as the charging time per SM capacitor. Therefore, the proposed sequential PG (SPG) is able to generate high repetitive pulse rates with high efficiency regardless the HV level of the pulse. Different characterizations of bipolar rectangular pulses can be generated. The proposed topology is assessed by MATLAB/Simulink platform and scaled-down experimentation. The results establish the viability of the SPG topology for the HV pulse generation for water disinfection applications.", keywords = "Electroporation, high voltage (HV), modular multilevel converter (MMC), pulse generator (PG), pulsed electric field (PEF), water treatment", author = "Elgenedy, \{Mohamed A.\} and Massoud, \{Ahmed M.\} and Shehab Ahmed and Williams, \{Barry W.\}", note = "Acceptance in SharePoint (note of date from author)", year = "2017", month = sep, day = "8", doi = "10.1109/JESTPE.2017.2750244", language = "English", volume = "6", pages = "1394 -- 1406", journal = "IEEE Journal of Emerging and Selected Topics in Power Electronics", issn = "2168-6777", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "3", } . IEEE Journal of Emerging and Selected Topics in Power Electronics.

Full-bridge modular multilevel sub-module based high-voltage bipolar pulse generator with low voltage DC input for pulsed electric field applications @article{ab7ae128237549eab631401a95a3fd1d, title = "Full-bridge modular multilevel sub-module based high-voltage bipolar pulse generator with low voltage DC input for pulsed electric field applications", abstract = "High voltage (HV) pulse generators (PGs) are the core of pulsed electric field applications. Applying HV pulses produces electrical pores in a biological cell membrane, in which if the size of the pores increases beyond a critical size, the cell will not survive. This paper proposes a new HV-PG, based on the modular multilevel converter with full-bridge sub-modules (FB-SMs). In order to alleviate the need of complicated sensorless or sensor based voltage balancing techniques for the FB-SM capacitors, a dedicated self-regulating charging circuit is connected across each FB-SM capacitor. The individual capacitor charging voltage-level is obtained from three successive stages namely: convert the low-voltage DC input voltage to a high-frequency square AC voltage; increase the AC voltage-level via a nano-crystalline step-up transformer; and rectify the secondary transformer AC voltage via a diode full-bridge rectifier. The HV bipolar pulses are formed across the load in a fourth stage through series connected FB-SMs. The flexibility of inserting and bypassing the FB-SM capacitors, allows the proposed topology to generate different pulse-waveform shapes, including rectangular waveforms with specifically reduced dv/dt and ramp pulses. The practical results, from a scaled down experimental rig with five FB-SMs and a 1kV peak to peak pulse output, validate the proposed topology.", keywords = "MMC, electroporation, power electronic converter, HVDC, pulsed electric field, pulse power systems", author = "Ibrahim Abdelsalam and Elgenedy, \{Mohamed A.\} and Shehab Ahmed and Williams, \{Barry W.\}", note = "(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.", year = "2017", month = sep, day = "1", doi = "10.1109/TPS.2017.2743822", language = "English", journal = "IEEE Transactions on Plasma Science", issn = "0093-3813", publisher = "Institute of Electrical and Electronics Engineers Inc.", } . IEEE Transactions on Plasma Science.

A modular multilevel generic pulse-waveform generator for pulsed electric field applications @article{f1d01a3d7c754627aafa0c9280344886, title = "A modular multilevel generic pulse-waveform generator for pulsed electric field applications", abstract = "High voltage (HV) pulses are used in pulsed electric field (PEF) applications to provide an effective electroporation process, a process in which harmful microorganisms are disinfected when subjected to a PEF. Depending on the PEF application, different HV pulse specifications are required such as: the pulse-waveform shape, the voltage magnitude, the pulse duration, and the pulse repetition rate. In this paper, a generic pulse-waveform generator (GPG) is proposed, the GPG topology is based on half-bridge modular multilevel converter (HB-MMC) cells. The GPG topology is formed of four identical arms of series connected HB-MMC cells forming an H-bridge. Unlike the conventional HB-MMC based converters in HVDC transmission, the GPG load power flow is not continuous which leads to smaller size cell capacitors utilization, hence smaller footprint of the GPG is achieved. The GPG topology flexibility allows the controller software to generate a basic multilevel waveform which can be manipulated to generate the commonly used PEF pulse-wave forms. Therefore, the proposed topology offers modularity, redundancy and scalability. The viability of the proposed GPG converter is validated by MATLAB/Simulink simulation and experimentation.", keywords = "modular multilevel converters, MMC, pulsed electric field, bacterial decontamination, electroporation", author = "Elgenedy, \{Mohamed A.\} and Ahmed Darwish and Shehab Ahmed and Williams, \{Barry W.\}", note = "(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.", year = "2017", month = sep, day = "1", doi = "10.1109/TPS.2017.2727068", language = "English", volume = "45", pages = "2527 -- 2535", journal = "IEEE Transactions on Plasma Science", issn = "0093-3813", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "9", } . IEEE Transactions on Plasma Science.

A modular multilevel generic pulse-waveform generator for pulsed electric field applications @article{c90b1cfa91a8469ba4d5e763a9615e57, title = "A modular multilevel generic pulse-waveform generator for pulsed electric field applications", abstract = "High-voltage (HV) pulses are used in pulsed electric field (PEF) applications to provide an effective electroporation process, a process in which harmful microorganisms are disinfected when subjected to a PEF. Depending on the PEF application, different HV pulse specifications are required such as the pulse-waveform shape, the voltage magnitude, the pulse duration, and the pulse repetition rate. In this paper, a generic pulse-waveform generator (GPG) is proposed, and the GPG topology is based on half-bridge modular multilevel converter (HB-MMC) cells. The GPG topology is formed of four identical arms of series-connected HB-MMC cells forming an H-bridge. Unlike the conventional HB-MMC-based converters in HVdc transmission, the GPG load power flow is not continuous which leads to smaller size cell capacitors utilization; hence, smaller footprint of the GPG is achieved. The GPG topology flexibility allows the controller software to generate a basic multilevel waveform which can be manipulated to generate the commonly used PEF pulse waveforms. Therefore, the proposed topology offers modularity, redundancy, and scalability. The viability of the proposed GPG converter is validated by MATLAB/Simulink simulation and experimentation.", keywords = "Bacterial decontamination, H-bridge, electroporation, modular multilevel converters (MMC), pulse-waveform generator, pulsed electric field (PEF)", author = "Elgenedy, \{Mohamed A.\} and Ahmed Darwish and Shehab Ahmed and Williams, \{Barry W.\}", note = "Acceptance in SharePoint", year = "2017", month = sep, doi = "10.1109/TPS.2017.2727068", language = "English", volume = "45", pages = "2527 -- 2535", journal = "IEEE Transactions on Plasma Science", issn = "0093-3813", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "9", } . IEEE Transactions on Plasma Science.

Mohamed A. Elgenedy, Ahmed Darwish, Shehab Ahmed, Barry W. Williams(2017). A Modular Multilevel Generic Pulse-Waveform Generator for Pulsed Electric Field Applications . IEEE Transactions on Plasma Science. 45. (9). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 2527--2535. Institute of Electrical and Electronics Engineers ({IEEE})

A modular multilevel generic pulse-waveform generator for pulsed electric field applications @article{e0d0f4516e88476cb773c3d3a343ff78, title = "A modular multilevel generic pulse-waveform generator for pulsed electric field applications", abstract = "High voltage (HV) pulses are used in pulsed electric field (PEF) applications to provide an effective electroporation process, a process in which harmful microorganisms are disinfected when subjected to a PEF. Depending on the PEF application, different HV pulse specifications are required such as: the pulse-waveform shape, the voltage magnitude, the pulse duration, and the pulse repetition rate. In this paper, a generic pulse-waveform generator (GPG) is proposed, the GPG topology is based on half-bridge modular multilevel converter (HB-MMC) cells. The GPG topology is formed of four identical arms of series connected HB-MMC cells forming an H-bridge. Unlike the conventional HB-MMC based converters in HVDC transmission, the GPG load power flow is not continuous which leads to smaller size cell capacitors utilization, hence smaller footprint of the GPG is achieved. The GPG topology flexibility allows the controller software to generate a basic multilevel waveform which can be manipulated to generate the commonly used PEF pulse-wave forms. Therefore, the proposed topology offers modularity, redundancy and scalability. The viability of the proposed GPG converter is validated by MATLAB/Simulink simulation and experimentation.", keywords = "modular multilevel converters, MMC, pulsed electric field, bacterial decontamination, electroporation", author = "Elgenedy, \{Mohamed A.\} and Ahmed Darwish and Shehab Ahmed and Williams, \{Barry W.\}", note = "(c) 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.", year = "2017", month = jul, day = "21", doi = "10.1109/TPS.2017.2727068", language = "English", journal = "IEEE Transactions on Plasma Science", issn = "0093-3813", publisher = "Institute of Electrical and Electronics Engineers Inc.", } . IEEE Transactions on Plasma Science.

A transition arm modular multilevel universal pulse-waveform generator for electroporation applications @article{81d6fd7ac7364366904bb821494afe9a, title = "A transition arm modular multilevel universal pulse-waveform generator for electroporation applications", abstract = "High voltage (HV) pulses are used in electroporation to subject pulsed electric field (PEF) onto a sample under treatment. Pulse-waveform shape, voltage magnitude, pulse duration, and pulse repetition rate are the basic controllable variables required for particular PEF application. In practice, a custom-made pulse generator is dedicated for each PEF application with limited flexibility in changing these variables. In this paper, a universal pulse-waveform generator (UPG) is proposed, where the controller software-algorithm can manipulate a basic generated multilevel pulse-waveform to emulate many different PEF pulse-waveforms. The commonly used PEF HV pulse-waveforms can be generated as bipolar or monopolar with controllable pulse durations, repetition times, and voltage magnitudes. The UPG has the ability to generate multilevel pulses that have controllable dv/dt which allow reduction of the electromagnetic interference (EMI) generated by the converter. The UPG topology is based on half-bridge modular multilevel converter (HB-MMC) cells forming two transition arms in conjunction with two bi-state arms, together creating an H-bridge. The HB-MMC cell-capacitors provide a controllable energy source which charge from the dc input supply and discharge across the load, while the two bi-state arms allow charging the HB-MMC cell-capacitors. Hence, the UPG topology offers modularity, redundancy, and scalability. The HB-MMC individual cell-capacitance is low and the cell-voltages are balanced by employing the sorting and rotating algorithm used in conventional HB-MMC topologies for HVDC transmission applications. The viability of the proposed UPG converter is validated by MATLAB/Simulink simulation and scaled-down experimentation.", keywords = "MMC, power electronic converter, pulse power systems, electroporation, high voltage, modular multilevel converters, transition arm, pulsed electric fields, pulse-waveforms generator, series connected IGBTs", author = "Elgenedy, \{Mohamed A.\} and Ahmed Badawy and Shehab Ahmed and Williams, \{Barry W.\}", note = "{\textcopyright} 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.", year = "2017", month = jan, day = "16", doi = "10.1109/TPEL.2017.2653243", language = "English", pages = "1--13", journal = "IEEE Transactions on Power Electronics", issn = "0885-8993", publisher = "Institute of Electrical and Electronics Engineers Inc.", } . IEEE Transactions on Power Electronics.

Elgenedy, M.A., Darwish, A., Ahmed, S., Williams, B.W.(2017). A Modular Multilevel Generic Pulse-Waveform Generator for Pulsed Electric Field Applications . IEEE Transactions on Plasma Science. 45. (9). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 2527-2535.

Abdelsalam, I., Elgenedy, M.A., Ahmed, S., Williams, B.W.(2017). Full-bridge modular multilevel submodule-based high-voltage bipolar pulse generator with low-voltage DC, input for pulsed electric field applications . IEEE Transactions on Plasma Science. 45. (10). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 2857-2864.

Elgenedy, M.A., Darwish, A., Ahmed, S., Williams, B.W.(2017). A Transition Arm Modular Multilevel Universal Pulse-Waveform Generator for Electroporation Applications . IEEE Transactions on Power Electronics. 32. (12). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 8979-8991.

Mohamed A. Elgenedy, Ahmed Darwish, Shehab Ahmed, Barry W. Williams(2017). A Transition Arm Modular Multilevel Universal Pulse-Waveform Generator for Electroporation Applications . IEEE Transactions on Power Electronics. Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 1--1. Institute of Electrical and Electronics Engineers ({IEEE})

Mohamed A. Elgenedy, Ahmed Darwish, Shehab Ahmed, Barry W. Williams(2016). A Modular Multilevel-Based High-Voltage Pulse Generator for Water Disinfection Applications . IEEE Transactions on Plasma Science. Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 1--8. Institute of Electrical and Electronics Engineers ({IEEE})

A modular multilevel-based high-voltage pulse generator for water disinfection applications @article{823b9940076a4598ab116f3fd47c26c6, title = "A modular multilevel-based high-voltage pulse generator for water disinfection applications", abstract = "The role of irreversible electroporation using pulsed electric field is to generate high-voltage (HV) pulses with a predefined magnitude and duration. These HV pulses are applied to the treatment chamber until decontamination of the sample is completed. In this paper, a new topology for HV rectangular pulse generation for water disinfection applications is introduced. The proposed topology has four arms comprised of series-connected half bridge modular multilevel converter cells. The rectangular pulse characteristics can be controlled via the software controller without any physical changes in power topology. The converter is capable of generating both bipolar and monopolar HV pulses with microsecond pulse durations at high a frequency rate with different characteristics. Hence, the proposed topology provides flexibility by software control, along with hardware modularity, scalability, and redundancy. Moreover, a cell's capacitance is relatively small, which drastically reduces the converter footprint. The adopted charging and discharging process of the cell capacitors in this topology eliminate the need of any voltage measurements or complex control for cell-capacitors voltage balance. Consequently, continuity of converter operation is assured under cell malfunction. In this paper, analysis and cell-capacitor sizing of the proposed topology are detailed. Converter operation is verified using MATLAB/Simulink simulation and scaled experimentation.", keywords = "High-voltage (HV) pulses, modular multilevel converters (MMCs), pulsed electric field (PEF), water disinfection", author = "Elgenedy, \{Mohamed A.\} and Ahmed Darwish and Shehab Ahmed and Williams, \{Barry W.\}", note = "Acceptance in SharePoint", year = "2016", month = nov, doi = "10.1109/TPS.2016.2610462", language = "English", volume = "44", pages = "2893 -- 2900", journal = "IEEE Transactions on Plasma Science", issn = "0093-3813", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "11", } . IEEE Transactions on Plasma Science.

A modular multilevel based high-voltage pulse generator for water disinfection applications @article{965ad5a66a5e411e8750f08fecdb2c97, title = "A modular multilevel based high-voltage pulse generator for water disinfection applications", abstract = "The role of irreversible electroporation using pulsed electric field (PEF) is to generate high voltage (HV) pulses with a predefined magnitude and duration. These HV pulses are applied to the treatment chamber until decontamination of the sample is completed. In this paper, a new topology for HV rectangular pulse generation for water disinfection applications is introduced. The proposed topology has four arms comprised of series connected half H-bridge modular multilevel converter cells. The rectangular pulse characteristics can be controlled via a software controller without any physical changes in power topology. The converter is capable of generating both bipolar and monopolar HV pulses with micro-second pulse durations at a high frequency rate with different characteristics. Hence, the proposed topology provides flexibility by software control, along with hardware modularity, scalability, and redundancy. Moreover, a cell's capacitance is relatively small which drastically reduces the converter footprint. The adopted charging and discharging process of the cell capacitors in this topology eliminate the need of any voltage measurements or complex control for cell-capacitors voltage balance. Consequently, continuity of converter operation is assured under cell malfunction. In this paper, analysis and cell-capacitor sizing of the proposed topology are detailed. Converter operation is verified using MATLAB/Simulink simulation and scaled experimentation.", keywords = "modular multilevel converters (MMC), pulsed electric field, high voltage pulses, water disintection", author = "Elgenedy, \{Mohamed A.\} and Ahmed Badawy and Shehab Ahmed and Williams, \{Barry W.\}", note = "{\textcopyright} 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.", year = "2016", month = sep, day = "28", doi = "10.1109/TPS.2016.2610462", language = "English", journal = "IEEE Transactions on Plasma Science", issn = "0093-3813", publisher = "Institute of Electrical and Electronics Engineers Inc.", } . IEEE Transactions on Plasma Science.

A Modular Multilevel-Based High-Voltage Pulse Generator for Water Disinfection Applications @article{5f19f326ae6e4fe18365a22f1f84ceff, title = "A Modular Multilevel-Based High-Voltage Pulse Generator for Water Disinfection Applications", abstract = "The role of irreversible electroporation using pulsed electric field (PEF) is to generate high voltage (HV) pulses with a predefined magnitude and duration. These HV pulses are applied to the treatment chamber until decontamination of the sample is completed. In this paper, a new topology for HV rectangular pulse generation for water disinfection applications is introduced. The proposed topology has four arms comprised of series connected half H-bridge modular multilevel converter cells. The rectangular pulse characteristics can be controlled via a software controller without any physical changes in power topology. The converter is capable of generating both bipolar and monopolar HV pulses with micro-second pulse durations at a high frequency rate with different characteristics. Hence, the proposed topology provides flexibility by software control, along with hardware modularity, scalability, and redundancy. Moreover, a cell's capacitance is relatively small which drastically reduces the converter footprint. The adopted charging and discharging process of the cell capacitors in this topology eliminate the need of any voltage measurements or complex control for cell-capacitors voltage balance. Consequently, continuity of converter operation is assured under cell malfunction. In this paper, analysis and cell-capacitor sizing of the proposed topology are detailed. Converter operation is verified using MATLAB/Simulink simulation and scaled experimentation.", keywords = "modular multilevel converters (MMC), pulsed electric field, high voltage pulses, water disintection", author = "Elgenedy, \{Mohamed A.\} and Ahmed Badawy and Shehab Ahmed and Williams, \{Barry W.\}", year = "2016", month = sep, day = "28", doi = "10.1109/TPS.2016.2610462", language = "English", volume = "44", pages = "2893 -- 2900", journal = "IEEE Transactions on Plasma Science", issn = "0093-3813", publisher = "Institute of Electrical and Electronics Engineers Inc.", number = "11", } . IEEE Transactions on Plasma Science.

A space vector PWM scheme for five-phase current-source converters @article{622aaa6036864e2eac2b5e4391a6867a, title = "A space vector PWM scheme for five-phase current-source converters", abstract = "The most recent literature on multiphase machine drives is based on voltage-source converter (VSC) systems utilizing different modulation techniques. Very little attention is given to the multiphase current-source converters (CSCs). Applying CSCs in high-power multiphase drive systems is promising and can effectively solve many technical problems associated with conventional VSC-based systems. This paper proposes a space vector pulsewidth-modulation (SVPWM) scheme suitable for a five-phase CSC. Generally, in SVPWM-CSCs, a current path should be provided for the dc-link current by ensuring that one pair of upper and lower switches is always on . Applying this constraint yields 25 different space vectors, which are mapped into two concentric decagons with ten equal sectors in the αβ and xy sequence planes. Each sector has two active-large vectors, two active-small vectors, and a null vector. Moreover, the active-large vectors in the αβ plane are active-small vectors in the xy plane, and vice versa. In the proposed scheme, the ampere-second concept is utilized to determine the ratio between the dwelling times of the large and small vectors such that the xy current components are nullified, the utilization of the input dc-current is maximized, and the switching transitions are minimized, which, in turn, minimizes the CSC switching losses. The proposed scheme can effectively provide sinusoidal converter currents, which is suitable for motor drives and energy conversion applications. The proposed scheme is verified using a 1-kW prototype five-phase induction motor fed by a five-phase CSC.", keywords = "current-source converters (CSCs), dc-link current utilization, dwelling times calculation, multiphase machines, space vector pulsewidth modulation (SVPWM), total harmonic distortion (THD), voltage-source converters (VSCs), Multiphase machines, Space vector pulsewidth modulation (SVPWM), Voltage-source converters (VSCs), Dc-link current utilization, Total harmonic distortion (THD), Dwelling times calculation, Current-source converters (CSCs)", author = "Elgenedy, \{Mohamed A.\} and Elserougi, \{Ahmed A.\} and Abdel-Khalik, \{Ayman S.\} and Massoud, \{Ahmed M.\} and Shehab Ahmed", year = "2016", month = jan, doi = "10.1109/TIE.2015.2493514", language = "English", volume = "63", pages = "562 -- 573", journal = "IEEE Transactions on Industrial Electronics", issn = "0278-0046", publisher = "IEEE Industrial Electronics Society", number = "1", } . IEEE Transactions on Industrial Electronics.

An improved fault-tolerant five-phase induction machine using a combined star/pentagon single layer stator winding connection @article{dd7e19e5c5424a7ea51fc42841ae8586, title = "An improved fault-tolerant five-phase induction machine using a combined star/pentagon single layer stator winding connection", abstract = "One of the main merits offered by multiphase machines is their high fault-tolerant capability. Literature has demonstrated that the performance of multiphase induction machines under fault conditions is affected by the employed stator winding connection. In open-loop controlled five-phase machines, the star connection is favorable under healthy conditions while the pentagon connection is favorable and yields a lower derating factor under the open phase condition. In this paper, a new combined star/pentagon single layer winding layout that combines the advantages of both star and pentagon connections is proposed for a five-phase induction machine. Although the proposed winding is intrinsically an asymmetrical ten-phase machine, the proposed connection allows for only five-phase terminals. Moreover, the proposed winding not only yields better flux distribution compared to a conventional single layer winding, but also provides a complete cancellation of the third-order harmonic flux component caused by the induced third sequence currents due to the saturation effect and/or under unbalanced operation. Hence, the machine losses are decreased, which improves the overall machine efficiency. For the healthy case, the machine is similar to a conventional star connected five-phase machine. However, with one phase open, the proposed connection results in a lower derating factor compared to conventional connections for both open-loop and optimal current control techniques. A 1-kW prototype machine is used for experimental verification.", keywords = "derating factors, fault tolerant, induction machine, multiphase machine, optimal current control, pentagon connection, star connection, star/pentagon connection, stator winding configuration", author = "Abdel-Khalik, \{Ayman S\} and Elgenedy, \{Mohamed A.\} and Shehab Ahmed and Massoud, \{Ahmed M\}", year = "2016", month = jan, doi = "10.1109/TIE.2015.2426672", language = "English", volume = "63", pages = "618--628", journal = "IEEE Transactions on Industrial Electronics", issn = "0278-0046", publisher = "IEEE Industrial Electronics Society", number = "1", } . IEEE Transactions on Industrial Electronics.

Abdel-Khalik, A.S., Elgenedy, M.A., Ahmed, S., Massoud, A.M.(2016). An improved fault-tolerant five-phase induction machine using a combined star/pentagon single layer stator winding connection . IEEE Transactions on Industrial Electronics. 63. (1). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 618-628.

Elgenedy, M.A., Elserougi, A.A., Abdel-Khalik, A.S., Massoud, A.M., Ahmed, S.(2016). A space vector PWM scheme for five-phase current-source converters . IEEE Transactions on Industrial Electronics. 63. (1). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 562-573.

Elgenedy, M.A., Darwish, A., Ahmed, S., Williams, B.W.(2016). A Modular Multilevel-Based High-Voltage Pulse Generator for Water Disinfection Applications . IEEE Transactions on Plasma Science. 44. (11). Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 2893-2900.

CONFERENCE PAPER

PV powered modular pulse generator with embedded energy storage for tumour treating fields @inproceedings{41ab1a6edc7b48bda0c577cdfcd3f357, title = "PV powered modular pulse generator with embedded energy storage for tumour treating fields", abstract = "Tumour Treating Fields (TTF) exhibit great potential as a standalone cancer treatment, primarily due to minimal side effects. The solid-state power converter is the main component, shaping voltage pulses to impose electric fields on cells. This converter should provide control and flexibility to target infected tissues without harming healthy cells. The proposed system is powered by renewable green energy, addressing the global warming crisis by reducing exhaust emissions. The system, built in a scalable three-stage modular form, can generate a wide range of voltage pulses. These stages include the interleaved DCDC Maximum Power Point Tracking (MPPT) converter assisted by embedded energy storage, and both powering the third stage, a full-bridge pulse generation converter. The system undergoes investigation through a MATLAB/Simulink case study for three cascaded modules. Additionally, each module operates under different conditions, demonstrating the system{\textquoteright}s functionality and reliability. Results show the system rapid response, and it functions properly even though modules are operated and investigated under different conditions and operating points.", keywords = "Distributed MPPT, Embedded Energy Storage, Interleaved Boost Converter, Modular Pulse Generator, PV, Tumour Treating Fields, In-terleaved Boost Converter", author = "Alshahat, \{Mahmoud A.\} and Elgenedy, \{Mohamed A.\} and Aboushady, \{Ahmed A.\} and Mark Williams and Sajid Nazir and Nebrase Elmrabit and Hadi Larijani", year = "2025", month = feb, day = "25", doi = "10.1109/UPEC61344.2024.10892407", language = "English", isbn = "9798350379747", series = "International Universities Power Engineering Conference (UPEC)", publisher = "IEEE", booktitle = "Proceedings of 2024 59th International Universities Power Engineering Conference (UPEC)", address = "United States", note = "59th International Universities Power Engineering Conference, UPEC2024 ; Conference date: 02-09-2024 Through 06-09-2024", url = "https://upec2024.com/", } . Proceedings of 2024 59th International Universities Power Engineering Conference (UPEC).

Kinetic energy recovery system for electric buses: a method for extending mileage range @inproceedings{fccc26052c0346938645b772d608d20e, title = "Kinetic energy recovery system for electric buses: a method for extending mileage range", abstract = "This paper proposes a novel system for electric buses (EBs) that utilizes an Airflow Kinetic Energy Recovery System (Air-KERS) to capture kinetic energy from the forward motion of the bus. The Air-KERS consists of a generator array with blades that rotate due to the airflow, generating electricity to recharge the battery. The analysis, calculations, and simulations presented support the feasibility of this concept. However, a key challenge is maintaining the required airflow speed for the generator array to operate optimally. The study proposes integrating air ducts, with the optimal placement found to be at the bottom of the EB due to the minimal drag coefficient. The research investigates the system's performance across three driving cycles, demonstrating a potential range increase of 2\% with an efficiency range of 70–90\% depending on the bus speed.", keywords = "Airflow, Electric Bus, Energy Recovery, Generator Array, Kinetic Energy, Range extension", author = "Elgenedy, \{Mohamed A.\} and Dharminder Singh and Chris Coman", year = "2025", month = jan, day = "7", doi = "10.1109/ESARS-ITEC60450.2024.10819772", language = "English", isbn = "9798350373912", series = "IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles and International Transportation Electrification Conference", publisher = "IEEE", booktitle = "Proceedings of 2024 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles \& International Transportation Electrification Conference (ESARS-ITEC)", address = "United States", note = "7th edition of the International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles (ESARS) and International Transportation Electrification Conference, ESARS ITEC 2024 ; Conference date: 26-11-2024 Through 29-11-2024", url = "https://www.esars.info/", } . Proceedings of 2024 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles & International Transportation Electrification Conference (ESARS-ITEC).

Charting Oman’s path to green hydrogen: embracing opportunities and overcoming challenges @inproceedings{6878bb65c89a47189a52311a3883b66e, title = "Charting Oman{\textquoteright}s path to green hydrogen: embracing opportunities and overcoming challenges", abstract = "Achieving net-zero emissions is a global obligation that requires everyone{\textquoteright}s participation. In its unwavering commitment to this cause, the Sultanate of Oman (Oman) considers green hydrogen to be a crucial element in its decarbonisation plan, in which green hydrogen is expected to reduce the total carbon emissions in 2050 by 8\% (8.5 Mt). Furthermore, Oman intends to position itself as a global hub for the production and export of green hydrogen by 2030, a testament to its dedication to environmental sustainability. The objective of this study is to explore how Oman{\textquoteright}s abundant natural resources can be harnessed to address the challenges posed by current technologies used for green-hydrogen production and promote the adoption of renewable energy sources in the country. The paper presents an analysis of the unique opportunities available in Oman: first, in green-hydrogen production by using natural minerals and critical elements extracted from the country{\textquoteright}s land for the manufacturing of electrolysis systems; and second, in renewable energy sources to power hydrogen plants with clean electrical power, including electrolysis systems. The discussion covers different types of electrolysis, including alkaline water electrolysis (AWE), proton-exchange membrane (PEM) electrolysis, solid oxide electrolysis (SOE), and anion-exchange membrane (AEM) electrolysis. Additionally, it delves into various renewable energy sources, such as onshore wind, solar photovoltaics (PV), concentrated solar power (CSP), among others, all of which are abundant in Oman. The paper compares the different types of electrolysis and different renewable energy sources in terms of the costs of installation, operation and maintenance, produced electricity, and system lifetime. Additionally, the study examines the challenges associated with electrolysis, such as the limitation of pure water resources required for water-splitting operations in Oman{\textquoteright}s environment. Moreover, the study discusses challenges associated with renewable energy sources, such as their impact on flora and fauna, the effects of high temperatures and dusty climates on solar systems, and the challenge of cost-effectiveness, providing a comprehensive understanding of the issues at hand. The most significant findings can be summarised as follows. First, using platinum, which accounts for more than 50\% of the total stack costs, makes PEM electrolysers expensive. Oman produces and exports platinum, which could be an opportunity. Second, the installation cost of the CSP system is higher than that of other renewable energy sources. This discourages most investors. It has the advantage, however, of being capable of energy storage. Third, the mountain ranges in Oman provide lower temperatures and dust levels, which minimise the negative impact of high temperatures and dust accumulation on PV cells. The findings", keywords = "CO emission, concentrated solar power (CSP), green hydrogen, net-zero, onshore wind, solar photovoltaics (PV)", author = "Hammad Al-Khayari and Farrag, \{M E A\} and Mohamed Elgenedy", year = "2024", month = sep, day = "10", doi = "10.2118/220470-MS", language = "English", publisher = "Society of Petroleum Engineers", booktitle = "Proceedings of the 2024 SPE International Health, Safety, Environment, and Sustainability Conference and Exhibition", note = "SPE International Health, Safety, Environment and Sustainability Conference and Exhibition 2024 ; Conference date: 10-09-2024 Through 12-09-2024", url = "https://www.spe-events.org/health-safety-environment-sustainability/", } . Proceedings of the 2024 SPE International Health, Safety, Environment, and Sustainability Conference and Exhibition.

Novel virtual-ground single-phase buck-boost inverter @inproceedings{34fbcdd90e3048808e48e3fc64845ee5, title = "Novel virtual-ground single-phase buck-boost inverter", abstract = "Due to variations in irradiance, temperature, and shading effect, the terminal voltages of photovoltaic panels are variable and therefore buck-boost inverters are required. This article presents a new buck-boost voltage-source inverter (VSI) topology. The proposed VSI is transformerless and has virtual-ground feature, which in terms mitigate the common-mode voltage issue of transformerless inverters and thus resulting in low leakage current. Detailed circuit analysis is provided based on the proposed modulation strategy in which four switches operate at line frequency and hence high power conversion efficiency can be realized. Furthermore, experimental results are provided with 500 W prototype in support of theoretical analysis and effectiveness of the proposed inverter.", keywords = "Buck-boost function, common-mode voltage, transformerless inverter, virtual-ground", author = "Fazal Akbar and Mohamed Elgenedy and Ahmad Elkhateb and Honnyong Cha and Park, \{Jung Wook\}", note = "Funding Information: Acknowledgment This work was supported in part by the National Research Foundation (NRF) under Grant 2020R1A3B2079407, the Ministry of Science and ICT (MSIT), South Korea; and in part by the U.K. Engineering and Physical Sciences Research Council (EPSRC) under Grant EP/T026162/1. Publisher Copyright: {\textcopyright} 2023 The Korean Institute of Power Electronics.; 11th International Conference on Power Electronics ICCE Asia, ICPE 2023-ECCE Asia ; Conference date: 22-05-2023 Through 25-05-2023", year = "2023", month = aug, day = "22", doi = "10.23919/ICPE2023-ECCEAsia54778.2023.10213675", language = "English", isbn = "9798350336207", series = "International Conference on Power Electronics (ICPE)", publisher = "Institute of Electrical and Electronics Engineers Inc.", pages = "544--548", booktitle = "2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia)", address = "United States", } . 2023 11th International Conference on Power Electronics and ECCE Asia (ICPE 2023 - ECCE Asia).

A vector control strategy for five-phase drives fed by simplified split-source inverters @inproceedings{7399e44e126c4d02a414a245d756e91f, title = "A vector control strategy for five-phase drives fed by simplified split-source inverters", abstract = "Multiphase electric drives are required in several applications to provide high levels of reliability. A newly developed multiphase Simplified Split-Source Inverter (S3I) provides a boost capability during sags in the input voltage. It also has a wider modulation range and a lower harmonic content than Z-Source Inverters. This paper proposes an Indirect Field-oriented Control (IFOC) strategy for a five-phase induction motor supplied by an S3I. This control strategy can be divided into three parts. The first uses a dual control loop to control the dc-boosted voltage of the S3I and regulate the input current. The second uses a conventional IFOC to control the motor speed and generate sinusoidal voltage references. With a newly developed space vector modulation approach, the third part will generate the switching pulses of the inverter switches. A series of simulations using PLECS and Python were conducted to verify the concept and illustrate the potential of the proposed drive system.", keywords = "multiphase machine, vector control, split-source inverter (SSI), Induction motor (IM), space vector modulation, induction motor, multiphase, split-source inverter", author = "Dabour, \{Sherif M.\} and Aboushady, \{Ahmed A.\} and Elgenedy, \{Mohamed A.\} and I.A. Gowaid and Farrag, \{Mohamed Emad\}", year = "2023", month = may, day = "11", doi = "10.1109/CPERE56564.2023.10119603", language = "English", isbn = "9781665452342", publisher = "IEEE", booktitle = "2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE)", address = "United States", note = "2023 IEEE Conference on Power Electronics and Renewable Energy, CPERE 2023 ; Conference date: 19-02-2023 Through 21-02-2023", url = "https://www.ieee-cpere.org/", } . 2023 IEEE Conference on Power Electronics and Renewable Energy (CPERE).

Analysis and control of simplified dual-output single-phase split-source boost inverters @inproceedings{ad58cb0323fa45cd8d247082a0f6ab38, title = "Analysis and control of simplified dual-output single-phase split-source boost inverters", abstract = "A simplified dual-output boosting inverter topology (DOBI) is proposed in this study. It can be used to supply two independent single-phase loads from a low voltage DC-power supply with fewer active and passive components. The output voltages can be at common frequency (CF) mode or different frequencies (DF) mode of operations. The DOBI topology uses a single inductor and capacitor to control boosting and inversion operations. Compared to the traditional dual output inverter, the proposed topology in this paper (DOBI) reduces the active switches by 25\%, while compared to the basic Z-source-based dual output inverter, it reduces the passive elements by 50\%. The main drawback of this topology is the high-frequency current commutation problem of the forward diodes. A novel carrier-based pulse width modulation scheme to obtain sinusoidal output voltage with low input current ripples of the proposed topology is presented in this paper. Moreover, the presented topology's operating principles and mathematical analysis are introduced. Finally, a simulation study is presented to confirm the theoretical study.", keywords = "split-source inverter, dual output inverter, boosting inverter, pulse width modulation, Split-source inverter, Boosting inverter, three-switch per leg inverters, Dual output inverter", author = "Dabour, \{Sherif M.\} and Aboushady, \{Ahmed A.\} and Gowaid, \{I. A.\} and Elgenedy, \{Mohamed A.\} and Farrag, \{Mohamed Emad\}", year = "2023", month = jan, day = "26", doi = "10.1109/MEPCON55441.2022.10021748", language = "English", isbn = "9781665463645", publisher = "IEEE", booktitle = "2022 23rd International Middle East Power Systems Conference, MEPCON 2022", address = "United States", note = "2022 23rd International Middle East Power Systems Conference (MEPCON), MEPCON 2022 ; Conference date: 13-12-2022 Through 15-12-2022", url = "http://mepcon.edu.eg/", } . 2022 23rd International Middle East Power Systems Conference, MEPCON 2022.

Enhanced finite control set-model predictive control for three-phase split-source inverters @inproceedings{4bff8a8240664cab91258c42cfed7e0b, title = "Enhanced finite control set-model predictive control for three-phase split-source inverters", abstract = "Three-phase Split-source inverter (SSI) has recently been proposed as an alternative to the three-phase Z-source inverters (ZSI). This paper introduced an improved finite control set-model predictive control (FCS-MPC) algorithm for the SSI. The proposed FCS-MPC algorithm reduces the computational burden by selecting the discharging vector directly according to the current status of the inductor compared to its reference point instead of checking the other states. Moreover, it simplifies the cost function by removing the inductor{\textquoteright}s current term, and thus no weighting factor is needed inside the cost function. A detailed analysis of the proposed algorithm is presented in this paper. Finally, simulation results based on MATLAB have been introduced to show the viability of the presented research and theoretical study of the FCS-MPC algorithm of the three-phase SSI under different operating conditions.", keywords = "split-source inverter, model predictive control, cost function definition, single-stage boosting inverter", author = "Abualkasim Bakeer and Dabour, \{Sherif M.\} and I.A. Gowaid and Aboushady, \{Ahmed A.\} and Elgenedy, \{Mohamed A.\} and Farrag, \{Mohamed Emad\}", year = "2022", month = oct, day = "18", doi = "10.1109/UPEC55022.2022.9917867", language = "English", isbn = "9781665455060", series = "Conference proceedings International Universities Power Engineering Conference", publisher = "IEEE", booktitle = "2022 57th International Universities Power Engineering Conference", address = "United States", note = "57th International Universities Power Engineering Conference , UPEC 2022 ; Conference date: 30-08-2022 Through 02-09-2022", url = "https://upec2022.khas.edu.tr/", } . 2022 57th International Universities Power Engineering Conference.

Current ripple evaluation of space vector modulated five-phase split-source inverters @inproceedings{63a70f3ca1a2417786eb3ab5ababb137, title = "Current ripple evaluation of space vector modulated five-phase split-source inverters", abstract = "Split-source inverters (SSIs) have recently gained much attention as single-stage boost inverters due to their advantages compared with their other counterparts, such as the Z-source inverters (ZSIs). This paper extends the topology of the basic SSI to multiphase systems. It focuses on a five-phase topology as an application to a five-phase drive system. The power circuit and operating principles of the analyzed topology are introduced. Moreover, a modified space vector modulation (MSVM) scheme is developed to eliminate the low-frequency ripples in the input current. In addition, detailed analysis and graphical evaluations of input and output current ripples are presented. Finally, simulation results based on PLECS have been conducted to show the viability of the presented analysis and theoretical study of the five-phase SSI.", keywords = "split-source inverter, multiphase machines, pulse width modulation", author = "Dabour, \{Sherif M.\} and Aboushady, \{Ahmed A.\} and Elgenedy, \{Mohamed. A.\} and I.A. Gowaid and Farrag, \{Mohamed Emad\}", year = "2022", month = oct, day = "18", doi = "10.1109/UPEC55022.2022.9917947", language = "English", isbn = "9781665455060", publisher = "IEEE", booktitle = "2022 57th International Universities Power Engineering Conference", address = "United States", note = "57th International Universities Power Engineering Conference , UPEC 2022 ; Conference date: 30-08-2022 Through 02-09-2022", url = "https://upec2022.khas.edu.tr/", } . 2022 57th International Universities Power Engineering Conference.

A new single-phase six-switch dual-output buck-boost inverter @inproceedings{125381ca25e94657a766c493dce7d1af, title = "A new single-phase six-switch dual-output buck-boost inverter", abstract = "In this article, a new single-phase reduced-switch-count inverter is proposed. The proposed inverter can supply energy independently to two ac loads and is capable of both stepping up and stepping down the input voltage. A detailed pulse-width modulation strategy is presented for the proposed inverter, which can generate both equal-frequency and different-frequency output voltages simultaneously. Finally, simulations are performed in PSIM, and the waveforms are provided, which verify the functionality of the proposed topology.", keywords = "buck-booster inverter, dual-output, reduced-switch-count converters, pulse width modulation", author = "Fazal Akbar and Mohamed Elgenedy and Ahmad Elkhateb", year = "2022", month = aug, day = "29", doi = "10.1049/icp.2022.1134", language = "English", publisher = " Institution of Engineering and Technology (IET)", booktitle = "11th International Conference on Power Electronics, Machines and Drives (PEMD 2022)", note = "The 11th International Conference on Power Electronics, Machines and Drives, PEMD 2022 ; Conference date: 21-06-2022 Through 23-06-2022", url = "https://pemd.theiet.org/", } . 11th International Conference on Power Electronics, Machines and Drives (PEMD 2022).

A new DC-DC converter linking LCC-HVDC transmission networks @inproceedings{3b9feed3a2e549d1b0924e481d7417f8, title = "A new DC-DC converter linking LCC-HVDC transmission networks", abstract = "This paper introduces an LCC-DAB converter topology connecting two LCC networks. It utilizes IGCTs, hence, allows mimicking similar control and performance as in IGBT based VSC-DAB. IGCTs feature higher efficiency, higher short circuit current and higher power ratings. Analysis and simulations are provided confirming its potential in connecting LCC-HVDC networks.", author = "Mohamed Elgenedy and Ibrahim Alhurayyis and Ahmad Elkhateb and Khaled Ahmed and Kaspars Kroics", year = "2021", month = oct, day = "25", doi = "10.23919/EPE21ECCEEurope50061.2021.9570474", language = "English", isbn = "9781665433846", booktitle = "Proceedings of the 23rd European Conference on Power Electronics and Applications, EPE'21 ECCE Europe 2021", publisher = "Institute of Electrical and Electronics Engineers Inc.", address = "United States", note = "23rd European Conference on Power Electronics and Applications, EPE{\textquoteright}21 ECCE Europe ; Conference date: 06-09-2021 Through 10-09-2021", url = "https://epe-ecce-conferences.com/epe2021/", } . Proceedings of the 23rd European Conference on Power Electronics and Applications, EPE'21 ECCE Europe 2021.

A new DC-DC converter linking LCC-HVDC transmission networks @inproceedings{0ca546055c674adf9e3f0d4c0237d7c9, title = "A new DC-DC converter linking LCC-HVDC transmission networks", abstract = "Transferring bulk power via high voltage direct current (HVDC) transmission is dominated by linecommutated converters (LCC). This is due to the robustness and higher ratings of the thyristors as wellas the higher converter efficiency. Nevertheless, most of these transmission networks are point to point.This is due to the challenges of allowing multi-terminal LCC based networks and power reversal. Thispaper introduces a new dc-dc converter topology that allows connecting two independent LCC networks.The proposed converter is based on insulated gate commutated thyristors (IGCTs). Utilizing IGCTsallow mimicking similar control and performance as in insulated gate bipolar transistor (IGBT) basedvoltage source dc-dc converters. However, IGCTs have more superior features over IGBTs such ashigher efficiency, higher short circuit current and higher power ratings. Detailed analysis andsimulations are provided to validate the proposed converter topology, which confirms its potential inconnecting HVDC-LCC networks.", keywords = "current-source DC-DC, DC-DC power converter, Dual Active Bridge (DAB) DC-DC converter, IGCT, multi-terminal HVDC", author = "Elgenedy, \{Mohamed A.\} and Ibrahim Alhurayyis and Ahmad Elkhateb and Khaled Ahmed and Kaspars Kroics", note = "Acceptance requested (acceptance from file transfer). ST 09/09/21 - Acceptance follow up. ST 13/09/21 - Author confirmed closest email to acceptance (in SharePoint). ST 15/09/21 AAM: no embargo; 23rd European Conference on Power Electronics and Applications, EPE{\textquoteright}21 ECCE Europe ; Conference date: 06-09-2021 Through 10-09-2021", year = "2021", month = oct, day = "25", doi = "10.23919/EPE21ECCEEurope50061.2021.9570474", language = "English", isbn = "9781665433846 ", series = "2021 23rd European Conference on Power Electronics and Applications, EPE 2021 ECCE Europe", publisher = "IEEE", booktitle = "2021 23rd European Conference on Power Electronics and Applications (EPE'21 ECCE Europe)", address = "United States", url = "https://epe-ecce-conferences.com/epe2021/", } . 2021 23rd European Conference on Power Electronics and Applications (EPE'21 ECCE Europe).

Tri-state cuk inverter with power decoupling for photovoltaic applications @inproceedings{c8fdca348f7049dc80d65e6ea0ad508a, title = "Tri-state cuk inverter with power decoupling for photovoltaic applications", abstract = "This paper proposes modified modulation and control schemes for power decoupling of single-stage single-phase Cuk inverter in continuous conduction mode. Because it has inherent two inductors at the input and output side, the Cuk inverter is able to step up/down the voltage with reduced input and output current ripples. Thus, smaller filtering capacitance, especially at the input side, can be used which increases its suitability for photovoltaic applications. For the maximum power point tracking control, the oscillating even order harmonic components should be eliminated from the inverter's input side otherwise the maximum power cannot be extracted. The inverter's input and output currents will be controlled independently using the proposed modulation scheme and hence even harmonics can be decoupled from the input side's current without adding additional circuitry. In addition, the paper presents a control scheme to generate sinusoidal output grid current while the input current is kept constant with time. The presented systems is verified using MATLAB simulations as well as an experimental prototype controlled by F28335 ezdsp.", keywords = "modular DC/AC inverter, Cuk converter, photovoltaic applications", author = "Ahmed Darwish and Saud Alotaibi and Elgenedy, \{Mohamed A.\}", year = "2021", month = oct, day = "22", doi = "10.1049/icp.2021.1408", language = "English", publisher = " Institution of Engineering and Technology (IET)", booktitle = "9th Renewable Power Generation Conference (RPG Dublin Online 2021)", note = "9th International Conference on Renewable Power Generation, RPG 2021 ; Conference date: 01-03-2021 Through 02-03-2021", } . 9th Renewable Power Generation Conference (RPG Dublin Online 2021).

Combined temprature and irradiation effects on the open circuit voltage and short circuit current constants for enhancing their related PV-MPPT algorithms @inproceedings{a4e6b988a86e4c70a3c6b380b53a5278, title = "Combined temprature and irradiation effects on the open circuit voltage and short circuit current constants for enhancing their related PV-MPPT algorithms", abstract = "The increasing demand for energy and the environmental impact from the excessive use of fossil fuels has increased the interest in the renewable research. Solar energy is increasingly becoming an area of interest to researchers due to its abundance source and accessibility. This can be achieved by utilizing photovoltaic (PV) panels. Nevertheless, due to PV nonlinear characteristics, maximum power point tracking (MPPT) algorithm are applied. Many MPPT techniques and improvement have been reported in the literature. In this paper, the impact of temperature and irradiation on the performance of proportionality constants in both fractional open circuit voltage (FOCV) MPPT and fractional short circuit current (FSCC) MPPT techniques are explored. Normally in these algorithms the irradiation effect is solely considered. However, the obtained results show that the value of these constants can be re-tuned for better energy harvesting when both the temperature and the irradiation change.", keywords = "Fractional open circuit (FOCV), fractional short circuit current (FSCC), maximum power point tracking (MPPT), PV, proportionality constant, proportionality constant, PV, fractional short circuit current (FSCC), maximum power point tracking (MPPT), Fractional open circuit (FOCV)", author = "Isaac Owusu-Nyarko and Elgenedy, \{Mohamed A.\} and Khaled Ahmed", year = "2020", month = feb, day = "6", doi = "10.1109/CPERE45374.2019.8980007", language = "English", isbn = "9781728109114", pages = "343--348", booktitle = "2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE)", publisher = "IEEE", address = "United States", note = "2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE), CPERE ; Conference date: 23-10-2019 Through 25-10-2019", } . 2019 IEEE Conference on Power Electronics and Renewable Energy (CPERE).

Owusu-Nyarko, I., Elgenedy, M.A., Ahmed, K.(2019). Combined Temprature and Irradiation Effects on the Open Circuit Voltage and Short Circuit Current Constants for Enhancing their Related PV-MPPT Algorithms . IEEE Conference on Power Electronics and Renewable Energy, CPERE 2019. Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 343-348.

Low-voltage DC input, high-voltage pulse generator using nano-crystalline transformer and sequentially charged MMC sub-modules, for water treatment applications @inproceedings{f7aec5a0c0e746f7a3cc499b93990d8d, title = "Low-voltage DC input, high-voltage pulse generator using nano-crystalline transformer and sequentially charged MMC sub-modules, for water treatment applications", abstract = "This paper proposes a new high-voltage Pulse Generator (PG), fed from low voltage dc supply V s . This input supply voltage is utilized to charge two arms of N series-connected modular multilevel converter sub-module capacitors sequentially through a resistive-inductive branch, such that each arm is charged to NV S . With a step-up nano-crystalline transformer of n turns ratio, the proposed PG is able to generate bipolar rectangular pulses of peak ±nNV s , at high repetition rates. However, equal voltage-second area of consecutive pulse pair polarities should be assured to avoid transformer saturation. Not only symmetrical pulses can be generated, but also asymmetrical pulses with equal voltage-second areas are possible. The proposed topology is tested via simulations and a scaled-down experimentation, which establish the viability of the topology for water treatment applications.", keywords = "pulse generator, modular multilevel converter (MMC), nano-crystalline transformer, bipolar pulses, rectangular pulse-waveform", author = "Elgenedy, \{M. A.\} and Massoud, \{A. M.\} and D. Holliday and S. Ahmed and B. Williams", year = "2017", month = nov, day = "3", doi = "10.1109/ECCE.2017.8096423", language = "English", isbn = "9781509029990", pages = "2144--2149", booktitle = "2017 IEEE Energy Conversion Congress and Exposition (ECCE)", publisher = "IEEE", address = "United States", note = "IEEE Energy Conversion Congress and Exposition 2017, ECCE2017 ; Conference date: 01-09-2017 Through 05-09-2017", } . 2017 IEEE Energy Conversion Congress and Exposition (ECCE).

Elgenedy, M.A., Massoud, A.M., Holliday, D., Ahmed, S., Illiams, B.W.(2017). Low-voltage DC input, high-voltage pulse generator using nano-crystalline transformer and sequentially charged MMC sub-modules, for water treatment applications . 2017 IEEE Energy Conversion Congress and Exposition, ECCE 2017. 2017-January. Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 2144-2149.

Smart grid self-healing: functions, applications, and developments @inproceedings{1cdc8bc99390496196856cd700c70c0d, title = "Smart grid self-healing: functions, applications, and developments", abstract = "Although the power system grid growth pace was slow, the load demand was not. Yet, there are some challenges that impeding the power grid to cope with the load pace, namely: renewable energy integration; energy efficiency; vulnerability to faults; and complexity of the power grid. Such challenges reveal the concept of smart grids (SG). In SG concept, secured, efficient, economic, and intelligent grid was sought in order to face the aforementioned challenges. One of the important tasks of an SG is self-healing. In this paper, the self-healing concept will be illustrated in the context of the SG. The self-healing functions, applications and developments will be explored. The major developments made in the transmission and distribution grid thanks to power electronics converters will be shown. Then, the employed communication technologies, measurements and software agents which can be used for taking critical SG self-healing decisions will be reviewed.", keywords = "communications technology, power converters, protection, self-healing, smart grid, software agents", author = "Elgenedy, \{M. A.\} and Massoud, \{A. M.\} and S. Ahmed", year = "2015", month = aug, day = "20", doi = "10.1109/SGRE.2015.7208737", language = "English", isbn = "9781467367646", booktitle = "2015 First Workshop on Smart Grid and Renewable Energy (SGRE)", publisher = "IEEE", address = "United States", note = "2015 First Workshop on Smart Grid and Renewable Energy, SGRE 2015 ; Conference date: 22-03-2015 Through 23-03-2015", } . 2015 First Workshop on Smart Grid and Renewable Energy (SGRE).

Energy in smart grid: strategies and technologies for efficiency enhancement @inproceedings{4aa87209a2694e39a16c782721832e46, title = "Energy in smart grid: strategies and technologies for efficiency enhancement", abstract = "Incorporating advanced software and hardware technologies, to create a two way electricity and information flow, is forming the concept of the smart grid (SG). In an SG the energy delivery and control not only autonomous but also efficient. Hence, intelligently-planned SG which aims to consume energy wisely will be able to gain benefits for both power grid and end-users. Thus, the end-user continuity of electricity is assured even if a power grid failure occurs. In this paper, the concept of SG energy efficiency is explored. The applied strategies and technologies for energy efficiency improvement are introduced. Also, the impact of using plug in electric vehicles (PEV), and the employment of energy storage and combined-heat-and-power (CHP) are surveyed. Moreover, the role of using power electronics and energy management in energy efficiency are discussed.", keywords = "combined-heat and power, energy efficiency, energy storage, microgrids, power electronics", author = "Elgenedy, \{M. A.\} and Massoud, \{A. M.\} and S. Ahmed", year = "2015", month = aug, day = "20", doi = "10.1109/SGRE.2015.7208719", language = "English", booktitle = "2015 First Workshop on Smart Grid and Renewable Energy (SGRE)", publisher = "IEEE", address = "United States", note = "2015 First Workshop on Smart Grid and Renewable Energy, SGRE 2015 ; Conference date: 22-03-2015 Through 23-03-2015", } . 2015 First Workshop on Smart Grid and Renewable Energy (SGRE).

Elgenedy, M.A., Massoud, A.M., Ahmed, S.(2015). Energy in smart grid: Strategies and technologies for efficiency enhancement . 2015 1st Workshop on Smart Grid and Renewable Energy, SGRE 2015.

Elgenedy, M.A., Massoud, A.M., Ahmed, S.(2015). Smart grid self-healing: Functions, applications, and developments . 2015 1st Workshop on Smart Grid and Renewable Energy, SGRE 2015.

Indirect field oriented control of five-phase induction motor based on SPWM-CSI @inproceedings{d3271a8e5d124ee69dc645725fe0633d, title = "Indirect field oriented control of five-phase induction motor based on SPWM-CSI", abstract = "Three-phase current source inverter (CSI)-based induction motor (IM) drives are attractive in MV applications since they feature a simple inverter structure, a lower switching dv/dt, and a reliable short circuit protection. Although multiphase machine topic, especially the five-phase one, gains considerable interest recently in literature, almost all the applied control methods are targeting voltage source inverters (VSIs). Using multiphase CSIs in multiphase machine applications is limited due to the difficulty of fulfilling the CSI gating requirements and the difficulty of modulation index control. In this paper, a five-phase SPWM-CSI is employed to drive a five-phase IM using indirect field oriented control (IFOC) through SPWM mapping technique with controlled modulation index. Additionally, the proposed method provides a reduced number of measurements, where the capacitor currents are automatically compensated via the modulation index controller. A simulation model has been built using MATLAB/SIMULINK to investigate the proposed system under different loading conditions.", keywords = "current source inverter (CSI), multiphase machine, mapping circuit, space vector pulse width modulation (SVPWM), sinusoidal pulse width modulation (SPWM), indirect field oriented control (IFOC)", author = "Elgenedy, \{M. A.\} and Abdel-Khalik, \{A. S.\} and Massoud, \{A. M.\} and S. Ahmed", year = "2014", month = nov, day = "20", doi = "10.1109/ICELMACH.2014.6960474", language = "English", pages = "2101--2106", booktitle = "2014 International Conference on Electrical Machines (ICEM)", publisher = "IEEE", address = "United States", note = "XXI International Conference on Electrical Machines, ICEM{\textquoteright}2014 ; Conference date: 02-09-2014 Through 05-09-2014", url = "http://conference.vde.com/icem/pages/welcome.aspx", } . 2014 International Conference on Electrical Machines (ICEM).

Sinusoidal PWM modulation technique of five-phase current-source-converters with controlled modulation index @inproceedings{bf22b1f0372f4c42a3044065cc3b9cc4, title = "Sinusoidal PWM modulation technique of five-phase current-source-converters with controlled modulation index", abstract = "Applications such as multiphase machine drives and wind energy conversion systems are normally based on voltage source converters (VSCs) which feature a convenient and familiar control scheme. In high-power medium voltage drives, three-phase current source converters (CSCs) are widely used owing to its simple topology, motor-friendly waveforms, power reversal capability, and short-circuit-inherited protection. Although controlling CSCs in three-phase is a troublesome, multi-phase CSCs gating generation and control are challenging. In this paper, a sinusoidal PWM-based controlled modulation index gating signal generator is introduced for five-phase CSCs. Two different simulation models have been built, using MATLAB/SIMULINK, to verify the proposed concept on rectification and inversion modes of the CSCs. The proposed controller provides a controllable linear modulation index with the availability of over modulation.", keywords = "current source rectifier (CSR), current source inverter (CSI), multiphase machine, mapping circuit, space vector pulse width modulation (SVPWM), sinusoidal pulse width modulation (SPWM), Current source rectifier (CSR)", author = "Elgenedy, \{M. A.\} and A. Abdel-Khalik and A. Elserougi and S. Ahmed and Massoud, \{A. M.\}", year = "2014", month = jul, day = "28", doi = "10.1109/ISIE.2014.6864689", language = "English", series = "IEEE International Symposium on Industrial Electronics", publisher = "IEEE", pages = "655--660", booktitle = "2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE)", address = "United States", note = "2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE) ; Conference date: 01-06-2014 Through 04-06-2014", } . 2014 IEEE 23rd International Symposium on Industrial Electronics (ISIE).

Fault-tolerant control of five-phase current source inverter for medium-voltage drives @inproceedings{bae156e56fb04400827223260f7431ff, title = "Fault-tolerant control of five-phase current source inverter for medium-voltage drives", abstract = "Multiphase Machines offer a promising solution to many practical challenges due to their advantages over the three phase counterparts, as fault-tolerant capability and lower torque ripple magnitude. Among different multiphase machines, five-phase machines correspond to a relatively practical selection in industrial applications. Multiphase machines are conventionally fed from voltage source inverter (VSI) as it facilities the operation under open-phase condition but with a sophisticated controller. Among different power converter topologies, current source inverter (CSI) features a simple inverter structure, a lower switching dv/dt, and a reliable short circuit protection. However, the control of multiphase CSI under open phase has not been yet considered in the literature. Additionally, the space vector PWM (SVPWM) of multiphase CSI is still challenging. Alternatively, the mapped sinusoidal PWM can offer simpler control over SVPWM. In this paper, a fault-tolerant controller for a five-phase CSI inverter is introduced and proposed for medium voltage drive applications. The proposed gating signal generator provides a controllable linear modulation index with the availability of over modulation. To verify the proposed fault-tolerant gating signal generator, a five-phase CSI feeds a static R-L load is simulated using MATLAB/SIMULINK as a case study exploring the healthy and the opened-phase cases.", keywords = "current source inverter (CSI), multiphase machine, mapping circuit, space vector pulse width modulation (SVPWM), sinusoidal pulse width modulation (SPWM), Space vector pulse width modulation (SVPWM), Multiphase machine, Current source inverter (CSI), Sinusoidal pulse width modulation (SPWM), Mapping circuit", author = "Elgenedy, \{M. A.\} and Abdel-Khalik, \{A. S.\} and A. Elserougi and S. Ahmed and A. Massoud", year = "2014", month = jun, day = "19", doi = "10.1049/cp.2014.0329", language = "English", isbn = "9781849198158", booktitle = "7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014)", publisher = " Institution of Engineering and Technology (IET)", note = "7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014 ; Conference date: 08-04-2014 Through 10-04-2014", } . 7th IET International Conference on Power Electronics, Machines and Drives (PEMD 2014).

A new five-phase to three-phase back-to-back current source converter based wind energy conversion system @inproceedings{97808cac95064b7faa5932ba5e4eccd3, title = "A new five-phase to three-phase back-to-back current source converter based wind energy conversion system", abstract = "Wind energy is one of the fastest growing renewable energy sources. The increased penetration of wind power into the utility grid brings challenges such as voltage and frequency fluctuations, generator torque ripples, and grid faults to power converter design in wind energy conversion systems (WECSs). Multiphase PM generators offers a promising solution to many challenges due to their inherited advantages over the three phase counterparts including reduced converter per leg rating and reduced torque ripples, which directly affect the lifetime of the drive train. In high power applications, direct drive PM generators are usually employed. Among different topologies of power converters, current source converter features a simple converter structure, low switching dv/dt, and reliable short circuit protection. In this paper, a new wind energy conversion system is proposed based on a direct drive five-phase PMSG connected to the grid using current source converters (CSCs). The generator side converter, operating in the rectification mode (CSR), is controlled to control the DC-link current, while the grid side converter, operating in the inversion mode (CSI), controls the active and reactive powers injected to the grid. The five-phase generator side converter is controlled using sinusoidal pulse width modulation (SPWM), while conventional space vector modulation is employed to control the three-phase grid side. A 5 MW system with typical system data is simulated via MATLAB/SIMULINK to validate the proposed topology.", keywords = "current source rectifier (CSR), current source inverter (CSI), multiphase machine, mapping circuit, space vector pulse width modulation (SVPWM), sinusoidal pulse width modulation (SPWM), Current source rectifier (CSR)", author = "Elgenedy, \{M. A.\} and A. Abdel-Khalik and A. Elserougi and S. Ahmed and Massoud, \{A. M.\}", year = "2014", month = jan, day = "9", doi = "10.1109/IEEEGCC.2013.6705774", language = "English", isbn = "9781479907229", pages = "193--198", booktitle = "2013 7th IEEE GCC Conference and Exhibition (GCC)", publisher = "IEEE", address = "United States", note = "2013 7th IEEE GCC Conference and Exhibition , GCC 2013 ; Conference date: 17-11-2013 Through 20-11-2013", } . 2013 7th IEEE GCC Conference and Exhibition (GCC).

Elgenedy, M.A., Abdel-Khalik, A., Elserougi, A., Ahmed, S., Massoud, A.M.(2014). Sinusoidal PWM modulation technique of five-phase current-source-converters with controlled modulation index . IEEE International Symposium on Industrial Electronics. Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 655-660.

Elgenedy, M.A., Abdel-Khalik, A.S., Massoud, A.M., Ahmed, S.(2014). Indirect field oriented control of five-phase induction motor based on SPWM-CSI . Proceedings - 2014 International Conference on Electrical Machines, ICEM 2014. Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 2101-2106.

Elgenedy, M.A., Abdel-Khalik, A.S., Elserougi, A., Ahmed, S., Massoud, A.(2014). Fault-tolerant control of five-phase current source inverter for medium-voltage drives . IET Conference Publications. 2014. (628 CP).

Elgenedy, M.A., Abdel-Khalik, A.S., Elserougi, A., Ahmed, S., Massoud, A.(2014). Fault-tolerant control of five-phase current source inverter for medium-voltage drives . 7th IET International Conference on Power Electronics, Machines and Drives, PEMD 2014.

Elgenedy, M.A., Abdel-Khalik, A., Elserougi, A., Ahmed, S., Massoud, A.M.(2013). A new five-phase to three-phase back-to-back current source converter based wind energy conversion system . 2013 7th IEEE GCC Conference and Exhibition, GCC 2013. Microsoft.AspNetCore.Mvc.Localization.LocalizedHtmlString 193-198.

A current-source-converter-based PMSG wind energy conversion system: simulation study @inproceedings{313d9c8c7c1e411ab62f4ac59f46f04a, title = "A current-source-converter-based PMSG wind energy conversion system: simulation study", abstract = "Wind energy is a prominent area of application of variable-speed generators operating on the constant grid frequency. This paper describes the operation and control of one of these variable-speed wind generators, namely, the Current Source Converter (CSC) based Permanent Magnet Synchronous Generator (PMSG). This generator is connected to the power network by means of a fully controlled frequency converter, which consists of a Pulse Width Modulation (PWM) rectifier, an intermediate dc circuit, and a PWM inverter. The generator is controlled to obtain maximum power from the incident wind by applying flux oriented control (FOC) to the generator side converter (Current Source Rectifier, CSR). On the other hand, voltage oriented control (VOC) is applied the grid-side converter (Current Source Inverter, CSI) to allow unity power factor operation of the windmill and to control the dc-link current. The controller keeps the dc-link current at a minimum value with various wind speeds to reduce the converter power loss at lower power levels. A simulation study is carried out using Matlab/Simulink to simulate the system under different conditions.", keywords = "current source converter (CSC), permanent magnet synchronous generator (PMSG), maximum power point tracking (MPPT), space vector modulation (SVM), flux oriented control (FOC), voltage oriented control (VOC)", author = "Elgenedy, \{M. A.\} and Abdel-Khalik, \{A. S.\} and Elserougi, \{A. A.\} and S. Ahmed and A. Massoud", year = "2012", month = dec, day = "23", language = "English", booktitle = "2012 15th International Middle East Power System Conference (MEPCON)", publisher = "IEEE", address = "United States", note = "15th International Middle East Power Systems Conference, MEPCON 15 ; Conference date: 23-12-2012 Through 25-12-2012", } . 2012 15th International Middle East Power System Conference (MEPCON).

Simulating three phase induction motor performance during different voltage sag types @inproceedings{18183774fc5d4398a406826fda692df3, title = "Simulating three phase induction motor performance during different voltage sag types", abstract = "This paper provides a detailed assessment of the performance of different induction motor sizes when subjected to different voltage sag types of different characterizations. To achieve such goal, a transient induction motor (IM) model was built using MATLAB/SIMULINK package, another model was built which is the voltage sag generator that provides the ability of generating almost any sag type with any customized characterizations.", keywords = "induction motors (IMs), power quality (PQ), symmetrical and unsymmetrical voltage sags, voltage sag characterizations", author = "Elgenedy, \{M. A.\} and A. Moussa and E. Negm", year = "2012", month = dec, day = "23", language = "English", booktitle = "2012 15th International Middle East Power System Conference (MEPCON)", publisher = "IEEE", address = "United States", note = "15th International Middle East Power Systems Conference, MEPCON 15 ; Conference date: 23-12-2012 Through 25-12-2012", } . 2012 15th International Middle East Power System Conference (MEPCON).

CONFERENCE PRESENTATION

Electroporation for water disinfection: a proof of concept experimentation @conference{098a05077a6f41dd8408f15f53935adf, title = "Electroporation for water disinfection: a proof of concept experimentation", abstract = "This paper is a proof of concept showing the effectiveness of using irreversible electroporation (IRE) as a stage of water disinfection in the water treatment process. The IRE process essentially requires relatively high voltage pulses to pose a pulsed electric field across harmful microorganisms. In this paper, a laboratory-based solid-state Marx generator was built for this purpose and untreated water samples have been used to test the effectiveness of applying variable pulse width, magnitude and rate. All the pulses are unipolar rectangular. The tested samples are all from the same water source with the same coliform count. After performing the electroporation disinfection process the coliform count reached zero proving the effectiveness of IRE.", keywords = "Coliform, Electric Field, Electroporation, Marx Generator, Power electronics, Pulsed Power, Voltage Pulses., Electric Field, Coliform, Marx Generator, Electroporation, Power electronics, Voltage Pulses, Pulsed Power", author = "Elgenedy, \{Mohamed A.\} and Simpson, \{Jake T.\} and Farrag, \{Mohamed E.\}", year = "2023", month = nov, day = "1", doi = "10.1109/UPEC57427.2023.10294337", language = "English", } .

Current sharing with dual phase-shift control for IPOP of modular CLLC dual active bridge DC-DC converters @conference{b27ceb0ce4ee4b95917f79204ca33039, title = "Current sharing with dual phase-shift control for IPOP of modular CLLC dual active bridge DC-DC converters", author = "Ibrahim Alhurayyis and Ahmad Elkhateb and Mohamed Elgenedy and Timothy Littler", note = "Unknown publication date – used last date of conference. ST 13/09/21 Query to author re proceedings/paper. ST 09/09/21 - Author confirmed paper (in mailbox). ST 13/09/21; The Centre for Power Electronics Annual Conference, CPE2021 ; Conference date: 13-07-2021 Through 15-07-2021", year = "2021", month = jul, day = "15", language = "English", url = "https://www.imaps.org.uk/events/cpe2021-centre-for-power-electronics-annual-conference-13-15-july-2021/", } . The Centre for Power Electronics Annual Conference, 13/07/21.

Low-voltage DC input, high-voltage pulse generator using nano-crystalline transformer and sequentially charged MMC sub-modules, for water treatment applications @conference{3db3c30b016d473fbc43a34ce9280ebc, title = "Low-voltage DC input, high-voltage pulse generator using nano-crystalline transformer and sequentially charged MMC sub-modules, for water treatment applications: IEEE Energy Conversion Congress \& Exposition", abstract = "This paper proposes a new high-voltage Pulse Generator (PG), fed from low voltage dc supply Vs. This input supply voltage is utilized to charge two arms of N series-connected modular multilevel converter sub-module capacitors sequentially through a resistive-inductive branch, such that each arm is charged to NVs. With a step-up nano-crystalline transformer of n turns ratio, the proposed PG is able to generate bipolar rectangular pulses of peak ±nNVs, at high repetition rates. However, equal voltage-second area of consecutive pulse pair polarities should be assured to avoid transformer saturation. Not only symmetrical pulses can be generated, but also asymmetrical pulses with equal voltage-second areas are possible. The proposed topology is tested via simulations and a scaled-down experimentation, which establish the viability of the topology for water treatment applications.", keywords = "pulse generator, modular multilevel converter (MMC), nano-crystalline transformer, bipolar pulses, rectangular pulse-waveform", author = "Elgenedy, \{M. A.\} and Massoud, \{A. M.\} and D. Holliday and S. Ahmed and B. Williams", note = "{\textcopyright} 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.", year = "2017", month = oct, day = "1", language = "English", } .

Low-voltage DC input, high-voltage pulse generator using nano-crystalline transformer and sequentially charged MMC sub-modules, for water treatment applications @conference{6df7c0574e684256ace9cde164f2aab1, title = "Low-voltage DC input, high-voltage pulse generator using nano-crystalline transformer and sequentially charged MMC sub-modules, for water treatment applications", abstract = "This paper proposes a new high-voltage Pulse Generator (PG), fed from low voltage dc supply Vs. This input supply voltage is utilized to charge two arms of N series-connected modular multilevel converter sub-module capacitors sequentially through a resistive-inductive branch, such that each arm is charged to NVs. With a step-up nano-crystalline transformer of n turns ratio, the proposed PG is able to generate bipolar rectangular pulses of peak ±nNVs, at high repetition rates. However, equal voltage-second area of consecutive pulse pair polarities should be assured to avoid transformer saturation. Not only symmetrical pulses can be generated, but also asymmetrical pulses with equal voltage-second areas are possible. The proposed topology is tested via simulations and a scaled-down experimentation, which establish the viability of the topology for water treatment applications.", keywords = "pulse generator, modular multilevel converter (MMC), nano-crystalline transformer, bipolar pulses, rectangular pulse-waveform", author = "Elgenedy, \{M. A.\} and Massoud, \{A. M.\} and D. Holliday and S. Ahmed and B. Williams", note = "{\textcopyright} 2017 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.; IEEE Energy Conversion Congress \& Exposition, ECCE 2017 ; Conference date: 01-10-2017 Through 05-10-2017", year = "2017", month = oct, day = "1", language = "English", url = "http://www.ieee-ecce.org/2017/", } . IEEE Energy Conversion Congress & Exposition, Cincinnati, United States, 1/10/17.

WORKING PAPER

ESCROWS Working Paper - Closed-Loop System @techreport{f2e3bf3b30fb4e6ba58e58e51363688b, title = "ESCROWS Working Paper - Closed-Loop System", author = "Mohamed Elgenedy and Ahmad Elkhateb", year = "2021", month = feb, language = "English", type = "WorkingPaper", } .