تصفح حسب المؤلف "Massoud, Ahmed M."
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An Improved Fault Tolerant Five-Phase Induction Machine Using A Combined Star/Pentagon Single Layer Stator Winding Connection
Abdel-Khalik, Ayman S.; Elgenedy, Mohamed A.; Ahmed, S.; Massoud, Ahmed M. ( IEEE , 2015 , Article)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 ... -
Arrester-less DC fault current limiter based on pre-charged external capacitors for half-bridge modular multilevel converters
Elserougi, Ahmed A.; Massoud, Ahmed M.; Ahmed, Shehab ( Institution of Engineering and Technology , 2017 , Article)The half-bridge modular multilevel converter (HB-MMC) is one of the most promising topologies for high-voltage direct current (HVDC) systems. Unlike full-bridge MMC (FB-MMC) and clamp double sub-module MMC (CDSM-MMC), ... -
Centralized, Distributed, and Module-Integrated Electric Power System Schemes in CubeSats: Performance Assessment
Hussein, Bayan; Massoud, Ahmed M.; Khattab, Tamer ( Institute of Electrical and Electronics Engineers Inc. , 2022 , Article)Pico-satellites, also called CubeSats, have gained significant attention in recent years because they offer a low-cost and low-power solution with low latency communication and high data rates compared to larger satellites. ... -
Control of Power Converters for Emerging Applications of Power Electronics
Massoud, Ahmed M.; Ahmed, Shehab; Abdel-Khalik, Ayman S.; Elserougi, Ahmed A.; Ahmed, Khaled H. ( Hindawi Publishing Corporation , 2016 , Article)With the skyrocketed development in semiconductor devices, power electronics converters, either at system-level or at device-level, are receiving special attention in different applications as renewable energy sources, ... -
Design of Optimal Droop Control for Multi-Terminal High-Voltage Direct Current Systems During Line Outages
Abu-Elanien, Ahmed E. B.; Abdel-Khalik, Ayman S.; Massoud, Ahmed M.; Ahmed, Shehab ( Taylor and Francis Inc. , 2019 , Article)This article investigates the required modifications to droop control design for optimum operation of Multi-Terminal High-Voltage Direct Current (MTHVDC) systems during line and converter outages. A typical 6-bus MTHVDC ... -
Dynamic modeling of a five-phase induction machine with a combined star/pentagon stator winding connection
Abdel-Khalik, Ayman S.; Ahmed, Shehab; Massoud, Ahmed M. ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)The combined star/pentagon connection of five-phase induction machines was recently demonstrated as a promising compromise between conventional star and pentagon connections. It combines the advantages of both star and ... -
Effect of Multilayer Windings with Different Stator Winding Connections on Interior PM Machines for EV Applications
Abdel-Khalik, Ayman Samy; Ahmed, Shehab; Massoud, Ahmed M. ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)The interior permanent magnet (IPM) machine equipped with a fractional-slot concentrated winding (FSCW) has met an increasing interest in electric vehicle applications due to its higher power density and efficiency. Torque ... -
Four-Arm Three-Phase Modular Multilevel Converter (4A-TPMMC)
Elserougi, Ahmed A.; Abdelsalam, Ibrahim; Massoud, Ahmed M.; Ahmed, Shehab ( Taylor and Francis Inc. , 2017 , Article)In this paper a Four-Arm Three-Phase MMC (4A-TPMMC)-based DC-AC converter is proposed. The proposed converter generates a three-phase output voltage using a lower number of components, which reduces the converter complexity ... -
Four-switch three-phase SEPIC-based inverter
Diab, Mohamed S.; Elserougi, Ahmed; Massoud, Ahmed M.; Abdel-Khalik, Ayman S.; Ahmed, Shehab ( IEEE , 2014 , Article)Four-switch three-phase (FSTP) inverter has been proposed as an innovative inverter design to reduce the cost, complexity, size, and switching losses of the DC-AC conversion system. Traditional FSTP inverter usually operates ... -
Integrated Switched Reluctance Starter/Generator for Aerospace Applications: Particle Swarm Optimization for Constant Current and Constant Voltage Control Designs
Sedky, Mohamed M.; Abdel-Azim, Wessam E.; Abdel-Khalik, Ayman S.; Massoud, Ahmed M. ( MDPI , 2022 , Article)Extensive efforts have been made to develop reliable and efficient onboard generation systems for electric aircraft. Due to the inherited robustness, Switched Reluctance Machines (SRMs) have attracted attention as a promising ... -
Modular Multilevel Converter-Based Bipolar High-Voltage Pulse Generator with Sensorless Capacitor Voltage Balancing Technique
Elserougi, Ahmed A.; Massoud, Ahmed M.; Ahmed, Shehab ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)In order to generate bipolar high-voltage (HV) pulses across certain load from HV dc (HVdc) power supply, a voltage source inverter (VSI) stage should be inserted between the load and the supply. In order to meet the ... -
Parameter identification of five-phase induction machines with single layer windings
Abdel-Khalik, Ayman S.; Daoud, Mohamed I.; Ahmed, Shehab; Elserougi, Ahmed A.; Massoud, Ahmed M. ( IEEE , 2014 , Article)Despite the increased interest in multiphase induction machines for safety-critical applications, machine parameter identification for the different sequence planes is still a challenging research point. In most available ... -
Postfault operation of a nine-phase six-terminal induction machine under single open-line fault
Abdel-Khalik, Ayman Samy; Hamad, Mostafa S.; Massoud, Ahmed M.; Ahmed, Shehab ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)This paper studies the postfault control of a nine-phase six-terminal induction machine (IM) during single open-line fault, which was recently proposed for high-power medium-voltage applications as a promising alternative ... -
Single-Stage Three-Phase Differential-Mode Buck-Boost Inverters with Continuous Input Current for PV Applications
Darwish, Ahmed; Massoud, Ahmed M.; Holliday, Derrick; Ahmed, Shehab; Williams, B.W. ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)Differential-mode buck-boost inverters have merits such as reduced switch number, ability to provide voltages higher or lower than the input voltage magnitude, improved efficiency, reduced cost and size, and increased power ... -
Steady-State Equivalent Circuit of Five-Phase Induction Machines with Different Stator Connections under Open-Line Conditions
Abdel-Khalik, Ayman Samy; Ahmed, Shehab; Massoud, Ahmed M. ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)The steady-state modeling of multiphase induction machines (IMs) with m phases under open-line fault conditions is usually carried out based on symmetrical component theory. Hence, the estimation of the machine characteristic ... -
Steady-State Mathematical Modeling of a Five-Phase Induction Machine with a Combined Star/Pentagon Stator Winding Connection
Abdel-Khalik, Ayman S.; Ahmed, Shehab; Massoud, Ahmed M. ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)This paper presents the steady-state mathematical model of a five-phase induction machine with a combined star/pentagon connection. The connection splits the stator winding into two five-phase windings displaced in space ... -
Symmetrical Nine-Phase Drives with a Single Neutral-Point: Common-Mode Voltage Analysis and Reduction
Dabour, Sherif M.; Aboushady, Ahmed A.; Elgenedy, Mohamed A.; Gowaid, I. A.; Farrag, Mohamed Emad; Abdel-Khalik, Ayman S.; Massoud, Ahmed M.; Ahmed, Shehab... more authors ... less authors ( MDPI , 2022 , Article)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 ... -
Unaligned inductance calculation using flux tube approach for rotor conducting screen-based SRM
Abdel-Aziz, Aly A.; Ahmed, Khaled H.; Massoud, Ahmed M.; Williams, Barry W. ( John Wiley and Sons Inc , 2021 , Article)This article investigates the effect of utilising rotor conducting screens within a switched reluctance machine (SRM). Conducting, non-magnetic materials such as aluminium or copper are inserted into the interpole regions ...