Browsing Electrical Engineering by Author "Abdel-Khalik, A."
Now showing items 21-32 of 32
-
Effect of stator winding connection of five-phase induction machines on torque ripples under open line condition
Abdel-Khalik, A.S.; Ahmed, S.; Elserougi, A.A.; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Article)One of the main challenges in designing high-power drive systems is the quality of the developed torque. High-torque-ripple magnitudes result in serious vibration and acoustic noise problems that affect the lifetime of a ... -
HVDC shunt tap based on series-input parallel-output DC-AC multi-module VSCs with DC voltages balancing
Elserougi, A.; Massoud, Ahmed; Abdel-Khalik, A.; Ahmed, S. ( Institution of Engineering and Technology , 2014 , Conference Paper)Conventionally, tapping-off a small amount of power from an HVDC transmission line to a three-phase local network can be achieved using a DC-to-AC voltage source converter (VSC) followed by a step down transformer. In order ... -
Indirect field oriented control of five-phase induction motor based on SPWM-CSI
Elgenedy, M. A.; Abdel-Khalik, A.S.; Massoud, Ahmed; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)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. ... -
Interior permanent magnet motor-based isolated on-board integrated battery charger for electric vehicles
Abdel-Khalik, A.S.; Massoud, Ahmed; Ahmed, S. ( Institution of Engineering and Technology , 2018 , Article)This study proposes an isolated on-board integrated battery charger using an interior permanent magnet (IPM) machine with a nine-slot/eight-pole combination or its multiples, and equipped with a non-overlapped fractional ... -
Multi-terminal Hvdc system with offshore wind farms under anomalous conditions: Stability assessment
Abu-Elanien, A. E. B.; Abdel-Khalik, A.S.; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)Droop control is widely adopted to control Multi-Terminal high-voltage Direct Current (MTDC) systems with offshore wind farms. During permanent faults, the faulty line should be isolated promptly to preserve a high reliability ... -
Optimum power transmission-based droop control design for multi-terminal HVDC of offshore wind farms
Abdel-Khalik, A. S.; Massoud, Ahmed; Elserougi, A. A.; Ahmed, S. ( IEEE , 2013 , Article)Power generation through wind is expected to play a major role in the world's future energy portfolio. Nevertheless, wind power integration remains a challenging research area due to the special characteristics of wind ... -
Performance assessment of renewable energy-fed three-phase grid-connected voltage source converters and boost inverters during DC side faults
Elserougi, A.; Abdel-Khalik, A. S.; Massoud, Ahmed; Ahmed, S. ( IEEEIEEE , 2013 , Conference Paper)In renewable energy-fed grid-connected applications, voltage source converters (VSC) offer high flexibility and system controllability features. In addition to the stepped down nature of its output voltage, the VSC is ... -
Postfault control of scalar (V/f) controlled asymmetrical six-phase induction machines
Abdel-Khalik, A.S.; Hamdy, R.A.; Massoud, Ahmed; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2018 , Article)With the accelerated development in semiconductor power devices along with the dictated rigorous reliability standards in some industrial sectors, the application of a medium-voltage high-power multiphase induction machine ... -
Sensorless V/f control with MRAS speed estimator for a five-phase induction machine under open-circuit phase faults
Morsy, A.S.; Abdel-Khalik, A.S.; Ahmed, S.; Massoud, Ahmed ( IEEE , 2013 , Conference Paper)This paper introduces a sensorless scalar controller with MRAS speed estimator based on simple Proportional Resonant PR controllers to provide a disturbance-free operation to a five-phase induction machine under phase open ... -
Torque ripple alleviation of a radial magnetic gearbox using step skewing approach
Zaytoon, H.; Abdel-Khalik, A. S.; Ahmed, S.; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)Recently, magnetic gearboxes (MGBs) are serious contenders to their conventional mechanical counterparts in terms of reduced maintenance requirements, improved reliability, tolerance to mechanical inaccuracies, and inherent ... -
Torque ripple reduction of radial magnetic gearbox using axial pole pairing
Zaytoon, H.; Abdel-Khalik, A. S.; Massoud, Ahmed; Ahmed, S.; Elarabawy, I. ( Institution of Engineering and Technology , 2014 , Conference Paper)Magnetic gearbox (MGB) is a contactless magnet-based transmission system that transmits mechanical power between two shafts. MGBs offer significant advantages over mechanical gears such as contactless power transfer, high ... -
Zero-/Low-Speed Operation of Multiphase Drive Systems With Modular Multilevel Converters
Daoud, M.I.; Elserougi, A.A.; Massoud, Ahmed; Bojoi, R.; Abdel-Khalik, A.S.; Ahmed, S.... more authors ... less authors ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)Modular multilevel converter (MMC)-based AC motor drives are emerging trend-research. They ease medium-/high-voltage handling in high-power applications with reduced footprint and life-cycle costs. A known challenge ...