Browsing by Author "Abdel-Khalik, Ayman S."
Now showing items 1-20 of 32
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A differential protection technique for multi-terminal HVDC
( Elsevier Ltd , 2016 , Article)This paper presents a technique for differential protection of Multi-terminal High Voltage Direct Current (MTHVDC) transmission lines. The proposed technique depends on the electrical current data at both ends of each line ... -
A Droop Control Design for Multiterminal HVDC of Offshore Wind Farms With Three-Wire Bipolar Transmission Lines
( IEEE , 2015 , Article)Converting existing ac transmission lines to an extended multiterminal three-wire bipolar HVDC system can be considered a cost-effective way to interconnect dispersed offshore wind farms to onshore ac grids instead of ... -
A four-switch based long-cable-fed five-phase induction motor drive system
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference)In applications where motors are fed from low voltage variable-frequency drive (VFD) through long cables, a step up transformer is commonly used to boost the converter output voltage in order to compensate for the cable ... -
A new dual series-connected Nine-Switch Converter topology for a twelve-phase induction machine wind energy system
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference)This paper introduces a new transformerless converter topology for Multiphase-Based Wind Energy Conversion Systems (WECSs). In this topology, a twelve-phase induction generator is integrated to the grid using dual Nine-Switch ... -
A new fifteen-switch inverter topology for two five-phase motors drive
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference)The multimotor drives supplied from reduced switch-count converter topologies are potentially employed in different applications such as EVs/HEVs and traction systems. Much research work has been done to investigate the ... -
A Nine-Phase Six-Terminal Concentrated Single-Layer Winding Layout for High-Power Medium-Voltage Induction Machines
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)This paper proposes a new winding layout for high-power medium-voltage nine-phase induction machines (IMs) based on a single-layer concentrated winding layout having a unity winding factor. The machine is fundamentally an ... -
A Nine-Switch-Converter-Based Integrated Motor Drive and Battery Charger System for EVs Using Symmetrical Six-Phase Machines
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)This paper presents a new configuration for integrated on-board battery chargers of electric vehicles (EVs) incorporating symmetrical six-phase machines. The configuration proposes an exclusive utilization of a nine-switch ... -
A non-communication based protection algorithm for multi-terminal HVDC grids
( Elsevier Ltd , 2017 , Article)This paper introduces a non-communication based protection algorithm for Multi-Terminal High Voltage Direct Current (MTHVDC) transmission lines. The algorithm relies on using electrical current data at one end for ... -
A Pulsewidth Modulation Technique for High-Voltage Gain Operation of Three-Phase Z-Source Inverters
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)Z-source inverter (ZSI) was recently proposed as a single-stage buck-boost dc-ac power conversion topology. It augments voltage boost capability to the typical voltage buck operation of the conventional voltage source ... -
A Senior Project-Based Multiphase Motor Drive System Development
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)Adjustable-speed drives based on multiphase motors are of significant interest for safety-critical applications that necessitate wide fault-tolerant capabilities and high system reliability. Although multiphase machines ... -
A sensorless Kalman filter-based active damping technique for grid-tied VSI with LCL filter
( Elsevier Ltd , 2017 , Article)Employing the LCL passive filter in inverter-based distributed generation to ensure high quality power delivery comes at the expense of poor performance due to the resonance phenomenon. Literature elucidated several active ... -
A Six-Phase 24-Slot/10-Pole Permanent-Magnet Machine with Low Space Harmonics for Electric Vehicle Applications
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)This paper proposes a six-phase surface-mounted permanent-magnet machine with a 24-slot/10-pole fractional slot winding, which not only eliminates the air-gap flux subharmonics, but also minimizes the effect of slot ... -
A space vector PWM scheme for five-phase current-source converters
( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)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 ... -
AC-powered multi-module high-voltage pusle-generator with sinusoidal input current for water treatment via underwater pulsed arc discharge
( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference)The underwater pulsed arc discharge is one of the effective methods in water treatment applications. In pulsed arc discharge, a pulsed output in the range of 1-10 kV is typically applied across the water treatment chamber ... -
Active Power Filter
( John Wiley & Sons, Ltd , 2014 , Book chapter)The proliferation of power electronics-based devices and equipment has significantly affected the power quality of the grid, which changes its sinusoidal nature through adding harmonic distortion. Power electronics ... -
An Improved Fault Tolerant Five-Phase Induction Machine Using A Combined Star/Pentagon Single Layer Stator Winding Connection
( 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 ... -
Application of stator shifting to five-phase fractional-slot concentrated winding interior permanent magnet synchronous machine
( Institution of Engineering and Technology , 2016 , Article)In many applications, interior permanent magnet synchronous machines (IPMSMs) with fractional slot concentrated windings (FSCWs) are considered promising candidates in terms of higher power density and efficiency. In ... -
Control of Power Converters for Emerging Applications of Power Electronics
( 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
( 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
( 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 ...
