Browsing Electrical Engineering by Author "Massoud, Ahmed"
Now showing items 1-20 of 195
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A cascaded boost inverter-based open-end winding three-phase induction motor drive for photovoltaic-powered pumping applications
Abdel-Khalik, A.S.; Elserougi, A.; Massoud, Ahmed; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Although PWM inverter-fed drives are now a well-established technology in industrial applications, the generation of common mode voltage associated with these modulation techniques results in undesired bearing current and ... -
A coaxial magnetic gearbox with magnetic levitation capabilities
Abdel-Khalik, A.; Massoud, Ahmed; Elserougi, A.; Ahmed, S. ( IEEEIEEE , 2012 , Conference Paper)Magnetic gearboxes (MGBs) are now a powerful alternative to their conventional mechanical counterparts in terms of reduced maintenance requirements, improved reliability, tolerance to mechanical inaccuracies, and inherent ... -
A directional protection technique for MTDC networks
Samir, A.; Abu-Elanien, A.E.B.; Abdel-Khalik, A.S.; Massoud, Ahmed; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)This paper suggests a new protection algorithm for a multi-terminal direct current (MTDC) networks. The current values and directions at each bus connecting more than one line are determined. The measured values of line ... -
A Family of Discontinuous PWM Strategies for Quasi Z-Source Nine-Switch Inverters
Dabour, S.M.; Abdel-Khalik, A.S.; Ahmed, S.; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)This paper proposes a new family of discontinuous PWM strategies to control the quasi-Z-source nine-switch inverters (qZS-NSI). The presented strategies provide buck and boost inversion capabilities, and suitable for ... -
A five-phase induction machine model using multiple DQ planes considering the effect of magnetic saturation
Abdel-khalik, A. S.; Ahmed, Shehab; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)Multiphase phase induction machines are usually modeled using multiple dq planes, where complete decoupling between these sequence planes is usually assumed. This assumption may be accepted if the magnetic circuit is assumed ... -
A five-phase linear induction machine with planar modular winding
Abdel-Khalik, A.S.; Ahmed, S.; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Linear induction motors (LIMs) have become a competitive alternative in electric traction. Three-phase LIM commonly uses double layer overlapping distributed windings. Although this winding configuration results in more ... -
A Full-Bridge Submodule-Based Modular Unipolar/Bipolar High-Voltage Pulse Generator with Sequential Charging of Capacitors
Elserougi, A.A.; Abdelsalam, I.; Massoud, Ahmed; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)Repetitive high pulsed electric field (PEF) is an effective method to kill microorganisms and bacteria in water treatment applications. The PEF can be generated by applying high-power electromagnetic pulse across the sample ... -
A generalized approach for design of contingency versatile DC voltage droop control in multi-terminal HVDC networks
Sayed, S.S.; Massoud, Ahmed ( Elsevier Ltd , 2021 , Article)The non-deterministic nature of power fluctuations in renewable energy sources impose challenges to the design of DC voltage-droop controller in Multi-Terminal High-Voltage DC (MTDC) systems. Fixed droop control does not ... -
A grid-connected cascaded H-bridge multilevel converter with quasi seven-level Selective Harmonic Elimination
Fakhry, M.G.; Massoud, Ahmed; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)In this paper, a high power grid-connected cascaded H-bridge multilevel inverter (CHB-MLI) operating with Selective Harmonic Elimination (SHE) is presented complying with the low switching frequency operation limitation. ... -
A grid-connected HVDC shunt tap based on series-input parallel-output DC-AC multi-module 2-level voltage source converters
Elserougi, A.; Massoud, Ahmed; Abdel-Khalik, A. S.; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Tapping-off a small amount of power from an HVDC transmission line to a three-phase local grid can be achieved by using shunt or series HVDC taps. This paper proposes a new grid-connected HVDC shunt tap. The proposed tap ... -
A grid-connected switched PV array
Elserougi, A.A.; Abdel-Khalik, A.S.; Massoud, Ahmed; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)In this paper, a grid-connected version of the switched PV array will be presented. The PV array consists of n parallel-connected strings and m series-connected modules per string, i.e. an array with a dimension of (m - ... -
A high voltage pulse-generator based on DC-to-DC converters and capacitor-diode voltage multipliers for water treatment applications
Elserougi, A.; Massoud, Ahmed; Ibrahim, A.M.; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Article)Pulsed electric field (PEF) can be used effectively in water treatment applications by passing infected water through two electrodes excited from a high voltage pulsed power supply which guarantees killing the harmful ... -
A Matlab/Simulink-Based Average-Value Model of Multi-Terminal HVDC Network
Sayed, S.; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)Multi-terminal High-Voltage Direct Current (MTDC) networks are emerging as the promising technology in modern transmission systems for efficient and bulky renewable energy sources transfer over long distances. Nonetheless, ... -
A modified capacitor voltage control algorithm for suppressing the effect of measurement noise on grid-connected Z-source inverters controllers
Hakeem, A.A.; Elserougi, A.; El Zawawi, A.; Ahmed, S.; Massoud, Ahmed ( http://dx.doi.org/10.1109/IECON.2013.6699136 , 2013 , Conference Paper)Inverters are considered the orbit of research objectives for safe and reliable grid interface. Amongst the conventional inverters known as suitable candidates for gird connection in the last two decades, Z-source inverter ... -
A modified modulation scheme for capacitor voltage control of renewable energy-fed grid-connected Z-Source Inverters
Hakeem, A.A.; Elserougi, A.; El Zawawi, A.; Ahmed, S.; Massoud, Ahmed ( IEEE , 2012 , Conference Paper)An important issue in grid connection applications is boosting the limited output voltage of the renewable energy sources. Two-stage converters are most commonly employed for successful grid connection and optimum power ... -
A modified stationary reference frame-based predictive current control with zero steady-state error for LCL coupled inverter-based distributed generation systems
Ahmed, K.H.; Massoud, Ahmed; Finney, S. J.; Williams, B. W. ( IEEE , 2011 , Article)This paper proposes a modified stationary reference frame-based predictive current controller with zero steady-state error for LCL coupled inverter-based distribution generation systems. Analytical expressions for the ... -
A modular multilevel DC-DC converter with self-energy equalization for DC grids
Elserougi, A.; Abdelsalam, I.; Massoud, Ahmed; Ahmed, S. ( John Wiley and Sons Inc , 2021 , Article)Medium-/High Voltage DC grids are interesting for the integration of renewable energy sources. DC-DC conversion systems are highly needed for the development of DC grids. Recently, Modular Multilevel Converter (MMC) is the ... -
A Neutral-Point Diode-Clamped Converter with Inherent Voltage-Boosting for a Four-Phase SRM Drive
Abdel-Aziz, A. A.; Ahmed, K. H.; Wang, S.; Massoud, Ahmed; Williams, B.W. ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)This article proposes a new asymmetric neutral-point diode-clamped (NPC) multilevel converter for a four-phase switched reluctance motor drive. The inbuilt NPC clamping capacitors are used for both voltage level clamping ... -
A new five-phase to three-phase back-to-back current source converter based wind energy conversion system
Elgenedy, M. A.; Abdel-Khalik, A.; Elserougi, A.; Ahmed, S.; Massoud, Ahmed ( IEEE , 2013 , Conference Paper)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 ... -
A new modulation technique for wide-range control of output voltage in Z-source inverters
Diab, M.S.; Elserougi, A.; Abdel-khalik, A.S.; Massoud, Ahmed; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)Z-source inverter (ZSI) is recently proposed as a single-stage power conversion topology. It adds voltage boost capability for complementing the usual voltage buck operation of the traditional voltage source inverter with ...