Browsing by Author "Abdel-Khalik, A."
Now showing items 1-20 of 32
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A cascaded boost inverter-based open-end winding three-phase induction motor drive for photovoltaic-powered pumping applications
( 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
( 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
( 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
( 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
( 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 grid-connected HVDC shunt tap based on series-input parallel-output DC-AC multi-module 2-level voltage source converters
( 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
( 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 new five-phase to three-phase back-to-back current source converter based wind energy conversion system
( 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
( 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 ... -
A New Six-Phase FSCW Layout for Permanent Magnet Synchronous Wind Generators
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Conference Paper)This paper proposes a new non-overlapped six-phase Fractional Slot Concentrated Winding (FSCW) layout for a Permanent Magnet (PM) synchronous wind generator with an outer rotor and surface mounted magnets. The proposed ... -
A nine-arm modular multilevel converter (9A-MMC) for six-phase medium voltage motor drives
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Dual three-phase (asymmetrical six-phase) induction motors have received significant attention in high power medium voltage drive applications. Typically, two three-phase voltage source converters are needed to feed such ... -
A power control strategy for flywheel doubly-fed induction machine storage system using artificial neural network
( Elsevier Ltd , 2013 , Article)A large-capacity low-speed flywheel energy storage system (FESS) based on a doubly-fed induction machine (DFIM) consists of a wound-rotor induction machine and a back-to-back converter rated at 30-35% of the machine power ... -
A reduced switch-count SEPIC-based inverter for asymmetrical dual three-phase induction machines
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)The interest in multiphase drives has been steadily growing during the last decade due to the promising potentials offered by multiphase machines over conventional three-phase counterpart. In this context, six-phase induction ... -
A voltage-behind-reactance model of five-phase induction machines considering the effect of magnetic saturation
( IEEE , 2013 , Article)Five-phase induction machines are generally modeled using multiple dq planes or using a phase variable model. This paper considers modeling five-phase induction machines using a voltage-behind-reactance (VBR) configuration. ... -
A Zeta-converter based four-switch three-phase DC-AC inverter
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Minimizing the number of active switching devices in switched-mode power-electronic systems has a significant importance. Reduced complexity and switching losses, low cost, weight, and volume and high reliability are the ... -
An Improved Torque Density Pseudo Six-Phase Induction Machine Using a Quadruple Three-Phase Stator Winding
( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)The nine-phase six-terminal induction machine has recently been proposed as a promising contender to the conventional six-phase asymmetrical winding machine in terms of torque density, phase current quality, stator winding ... -
An Optimal PWM Technique for Dual-Output Nine-Switch Boost Inverters with Minimum Passive Component Count
( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)Nine-Switch inverter (NSI) has been recently introduced for independent control of dual ac motors. Although this topology reduces the number of active switches by 25% compared to conventional inverters, it has a main ... -
Assessment of fault-ride through capability of grid-connected brushless DFIG wind turbines
( Institution of Engineering and Technology , 2011 , Conference Paper)DFIGs are reported to suffer serious reliability problems due to the presence of slip-rings, brushes and gearbox. These disadvantages encouraged several research groups to investigate the viability of employing single-frame ... -
Carrier-Based PWM Strategy for Quasi-Z Source Nine-Switch Inverters
( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)Nine-switch Inverters (NSIs) have been proposed to accommodate the independent control of dual AC motors or in six-phase drives. This topology reduces the number of active switches by 25% compared with conventional Voltage ... -
Cogging torque reduction of axial magnetic gearbox using pole pairing technique
( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Magnetic gearbox (MGB) becomes an attractive research topic in mechanical transmission as it offers significant advantages over mechanical gears such as contactless power transfer, high gear ratios, inherent overload ...