Browsing by Author "n 2014186122"
Now showing items 1-20 of 167
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A bidirectional non-isolated hybrid modular DC-DC converter with zero-voltage switching
Elserougi A.; Abdelsalam I.; Massoud A.; Ahmed S. ( Elsevier Ltd , 2019 , Article)In this paper, a bidirectional non-isolated hybrid modular DC-DC converter for high-voltage (HV) applications is investigated. In this configuration, conventional Half-Bridge Sub-Modules (HB-SMs) are employed. The proposed ... -
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 DC autotransformer design for medium and high voltage DC transmission systems
Gowaid I.A.; Adam G.P.; Williams B.W.; Massoud A.M.; Ahmed S. ( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)This paper studies a dc-dc converter topology dual to the ac autotransformer for medium and high voltage dc-dc conversion. Operation with trapezoidal modulation is analyzed where the dc autotransformer is built of ... -
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 Dual Modular Multilevel Converter with High-Frequency Magnetic Links between Submodules for MV Open-End Stator Winding Machine Drives
Diab M.S.; Massoud A.M.; Ahmed S.; Williams B.W. ( Institute of Electrical and Electronics Engineers Inc. , 2018 , Article)This paper presents a dual modular multilevel converter (MMC) topology that utilizes energy exchange between adjacent-arm submodules (SMs), operating with out-of-phase modulation. The proposed configuration is applicable ... -
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 Grid-Connected Capacitor-Tapped Multimodule Converter for HVDC Applications: Operational Concept and Control
Elserougi A.A.; Massoud A.M.; Ahmed S. ( Institute of Electrical and Electronics Engineers Inc. , 2018 , Article)In this paper, a dc-ac buck converter is proposed as a grid-side converter in high voltage dc (HVdc) transmission systems for high-power renewable energy source grid integration. The proposed architecture consists of ... -
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 High-Gain, High-Voltage Pulse Generator Using Sequentially Charged Modular Multilevel Converter Submodules, for Water Disinfection Applications
Elgenedy M.A.; Massoud A.M.; Ahmed S.; Williams B.W. ( Institute of Electrical and Electronics Engineers Inc. , 2018 , Article)Modularity, redundancy, and scalability are the key features recently sought in high-voltage (HV) pulse generators (PGs) for electroporation applications. Such features are gained by utilizing modular multilevel converter ... -
A HVDC shunt tap based on unidirectional hybrid modular DC-DC converter with simultaneous charging and sequential discharging of capacitors
Elserougi A.A.; Massoud A.M.; Ahmed S. ( Elsevier Ltd , 2018 , Article)In this paper, a new HVDC shunt tap is proposed. The proposed configuration consists of a unidirectional hybrid modular DC-DC converter followed by a voltage source converter for DC-AC conversion to feed a local AC network ... -
A Hybrid Nine-Arm Modular Multilevel Converter for Medium-Voltage Six-Phase Machine Drives
Diab M.S.; Elserougi A.A.; Massoud A.M.; Ahmed S.; Williams B.W. ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)The nine-arm modular multilevel converter (9A-MMC) has been recently proposed as a reduced MMC topology variation for six-phase drive applications, with 25% reduction in the number of employed arms and associated components, ... -
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 ...