Browsing by Author "Massoud, Ahmed"
Now showing items 21-40 of 195
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A new protection scheme for HVDC converters against DC-side faults with current suppression capability
Elserougi, A.A.; Abdel-Khalik, A. S.; Massoud, Ahmed; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Article)Two-level voltage-source converters and half-bridge modular multilevel converters are among the most popular types of HVDC converters. One of their serious drawbacks is their vulnerable nature to dc-side faults, since the ... -
A new single tooth winding layout for a single-phase induction motor with segmented stator
Abdel-Khalik, A.S.; Diab, M.S.; Ahmed, S.; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Machines with modular structure significantly simplify the manufacturing process, particularly the stator winding, and highly increase the slot fill factor. The non-overlapping concentrated winding, or single tooth winding, ... -
A New Six-Phase FSCW Layout for Permanent Magnet Synchronous Wind Generators
Abdel-Khalik, A.S.; Abu-Elanien, A.E.B.; Massoud, Ahmed; Ahmed, S. ( 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
Elserougi, A.A.; Abdel-Khalik, A.S.; Massoud, Ahmed; Ahmed, S. ( 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 Novel Converter Station Structure for Improving Multiterminal HVDC System Resiliency Against AC and DC Faults
Wang, S.; Ahmed, K.H.; Adam, G.P.; Massoud, Ahmed; Williams, B. W. ( Institute of Electrical and Electronics Engineers Inc. , 2020 , Article)In an effort to minimize the power disruption between a dc grid and ac grids that host power converters during ac and dc network faults, this paper proposes a novel converter station structure to improve ac and dc fault ... -
A novel open-stator-winding DFIM flywheel architecture for renewable energy applications
Gowaid, I.,A.; Elserougi, A.; Abdel-Khalik, A.S.; Massoud, Ahmed; Ahmed, S. ( IEEE , 2013 , Conference Paper)Energy storage is becoming a basic component of modern renewable power plants, especially wind farms. For several considerations, local wind turbine (WT) energy storage is preferred. Flywheel energy storage is among the ... -
A power control strategy for flywheel doubly-fed induction machine storage system using artificial neural network
Abdel-Khalik, A.; Elserougi, A.; Massoud, Ahmed; Ahmed, S. ( 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
Diab, M. S.; Elserougi, A.; Abdel-Khalik, A. S.; Massoud, Ahmed; Ahmed, S. ( 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 reduced switch-count single-phase SEPIC-based inverter
Diab, M.S.; Elserougi, A.; Massoud, Ahmed; Abdel-Khalik, A.S.; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Conference Paper)Recently, reduced switch-count converters have garnered exceptional attention in power electronic systems due to the diversified advantages such as low cost, low weight and volume, and high reliability offered by them. In ... -
A simple active-power control technique for grid-connected three-phase inverters at unity power factor
Elserougi, A.; Abdel-Khalik, A.S.; Ahmed, S.; Massoud, Ahmed ( IEEE Computer Society , 2013 , Conference Paper)This paper presents a simple active-power control technique for low voltage grid-connected three-phase inverters with zero injected reactive power (unity power factor at grid). Two versions of the proposed controller are ... -
A Simulink model of an active island detection technique for inverter-based distributed generation
Khan, F.; Massoud, Ahmed; Gastli, A. ( IEEE , 2013 , Conference Paper)With the increased involvement of Distributed Power Generation Systems (DPGSs) into the conventional power system, the structure has evolved and therefore has brought in various challenges albeit improving flexibility and ... -
A single-stage three-phase DC/AC inverter based on Cuk converter for PV application
Darwish, A.; Elserougi, A.; Abdel-Khalik, A. S.; Ahmed, S.; Massoud, Ahmed; Holliday, D.; Williams, B. W.... more authors ... less authors ( IEEE , 2013 , Conference Paper)This paper presents a new three-phase dc-ac inverter based on the basic Cuk converter. The main feature of the proposed topology is the fact that the energy storage elements as inductors and capacitors values can be reduced ... -
A single-stage three-phase inverter based on cuk converters for PV applications
Darwish, A.; Holliday, D.; Ahmed, S.; Massoud, Ahmed; Williams, B. W. ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)This paper presents a new three-phase inverter based on the Cuk converter. The main feature of the proposed topology is that the energy storage elements, such as inductors and capacitors, can be reduced in order to improve ... -
A Six-Arm Symmetrical Six-Phase Hybrid Modular Multilevel Converter with Unidirectional Current Full-Bridge Submodules
Elserougi A.; Diab M.S.; Massoud, Ahmed; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)Multiphase converter complexity is one of the concerns that restrict the widespread utilization of multiphase machines. One of the developmental trends to alleviate the converter complexity is reducing passive and active ... -
A state of the art review of control techniques for power electronics converter based distributed generation systems in different modes of operation
Ahmed, K.H.; Massoud, Ahmed; Adam, G.P.; Zobaa , A. F. ( IEEE Computer SocietyIEEE , 2013 , Conference Paper)This paper presents an overview of the state of the art techniques in inverter-based distribution generation systems. Different control techniques and classification of inverter modules operated in grid and islanded modes ... -
A stationary frame current control for inverter-based distributed generation with sensorless active damped LCL filter using Kalman filter
El-Deeb, H.M.; Elserougi, A.; Abdel-Khalik, A.S.; Ahmed, S.; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2014 , Conference Paper)Due to the large variety of renewable power sources, power electronics play an important role in energy conversion. Different power converter topologies are used to interface distributed power generation systems (DPGS) ... -
A switched PV approach for extracted maximum power enhancement of PV arrays during partial shading
Elserougi, A. A.; Diab, M. S.; Massoud, Ahmed; Abdel-Khalik, A. S.; Ahmed, S. ( Institute of Electrical and Electronics Engineers Inc. , 2015 , Article)This paper proposes a switched photovoltaic (PV) approach to enhance the extracted maximum power from a PV array during partial shading conditions. The proposed system is simple and cost effective. However, it may provide ... -
A Switching-Gain Controller for Grid-Connected MMC Complying with Voltage Ride-Through Requirements
Altawallbeh, A.; Meskin, N.; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)Connecting high-power Renewable Energy Sources (RESs) to the utility grid has to be secured considering international standards to guarantee the efficiency, reliability, and stability of the power system. Redundancy, ... -
A synchronous DQ frame controller via an LCL coupled filter under unbalanced three-phase voltage supply conditions
Ahmed, K. H.; Massoud, Ahmed; Finney, S. J.; Williams, B. W. ( IEEE , 2011 , Conference Paper)This paper proposes a synchronous DQ frame current controller for inverter based interfaced systems. The grid voltage may be unbalanced, possibly due to unequal line impedance. The output active and reactive powers oscillate ... -
A T-Type Modular Multilevel Converter
Wang, S.; Massoud, Ahmed; Williams, B.W. ( Institute of Electrical and Electronics Engineers Inc. , 2021 , Article)This article proposes a novel modular multilevel converter (MMC) named 'T-type MMC' (T-MMC) for reliable, controllable, and efficient performance in energy conversion applications. Circuitry configurations and control ...