تصفح Electrical Engineering حسب المؤلف "Elserougi, Ahmed"
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A bi-directional boost converter-based non-isolated DC-DC transformer with modular solid-state switches for medium-/high-voltage DC grids
Elserougi, Ahmed; Massoud, Ahmed; Ahmed, Shehab ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)In this paper, a bi-directional non-isolated dc-dc transformer is proposed, which can be used for connecting different dc voltage levels in medium-/high-voltage dc grids. The proposed dc-dc transformer is based on the ... -
A boost converter-based ringing circuit with high-voltage gain for unipolar pulse generation
Elserougi, Ahmed; Ahmed, Shehab; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)High-Voltage pulse generators are commonly used in biotechnology, medicine, industrial applications, food processing and drinking water purification. The dc-dc boost converter has been used before in pulsed applications ... -
A boost-inverter-based bipolar high-voltage pulse generator
Elserougi, Ahmed; Massoud, Ahmed M.; Ahmed, Shehab ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)Bipolar repetitive high-voltage pulse generators are commonly used in modern pulsed power applications. Conventionally, bipolar high-voltage pulses can be generated by adding a high-voltage H-bridge at the output stage of ... -
A Flywheel Energy Storage System for Fault Ride Through Support of Grid-Connected VSC HVDC-Based Offshore Wind Farms
Daoud, Mohamed I.; Massoud, Ahmed M.; Abdel-Khalik, Ayman Samy; Elserougi, Ahmed; Ahmed, Shehab ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)Voltage source converter (VSC)-based high voltage DC (HVDC) transmission is considered the future of offshore power transmission. This paper aims at providing a reliable VSC-HVDC transmission system architecture between ... -
A four-switch based long-cable-fed five-phase induction motor drive system
Massoud, Ahmed; Elserougi, Ahmed; Abdel-Khalik, Ayman; Ahmed, Shehab ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)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 hybrid boost modular multilevel converter-based bipolar high voltage pulse generator
Elserougi, Ahmed; Massoud, Ahmed; Daoud, Mohamed; Ahmed, Shehab ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Article)Conventional Modular Multilevel Converter (MMC) with Half-Bridge Sub-Modules (HB-SMs) can be used effectively as a solid-state high-voltage pulse generator to chop a high-voltage dc input into a bipolar pulsed output voltage ... -
A Non-Isolated Hybrid-Modular DC-DC Converter for DC Grids: Small-Signal Modeling and Control
Elserougi, Ahmed; Abdelsalam, Ibrahim; Massoud, Ahmed; Ahmed, Shehab ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)This paper presents small-signal modeling, stability analysis, and controller design of a non-isolated bidirectional hybrid-modular DC-DC Converter for DC grid applications. The DC-DC converter can be used to interconnect ... -
Conceptual study of a Bipolar modular high voltage Pulse generator with sequential charging
Elserougi, Ahmed; Massoud, Ahmed; Ahmed, Shehab ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Article)Repetitive Pulsed Electric Field (PEF) is a common technique for disinfecting liquids. By applying adequate PEF across germ cell membranes, an irreversible electroporation process, and cell destruction can be achieved. The ... -
Enhancing the DC voltage utilization of twelve-switch voltage source inverter feeding symmetrical/asymmetrical nine-phase loads
Elserougi, Ahmed; Abdelsalam, Ibrahim; Massoud, Ahmed; Ahmed, Shehab ( Institute of Electrical and Electronics Engineers Inc. , 2017 , Conference Paper)Twelve-Switch Nine-Phase Inverter (TSNPI) can be used to feed three independent three-phase loads or nine-phase load such as nine-phase machines. It provides dc-ac conversion with a reduced number of switches, as only ... -
Four-switch three-phase SEPIC-based inverter
Diab, Mohamed S.; Elserougi, Ahmed; Massoud, Ahmed M.; Abdel-Khalik, Ayman S.; Ahmed, Shehab ( IEEE , 2014 , Article)Four-switch three-phase (FSTP) inverter has been proposed as an innovative inverter design to reduce the cost, complexity, size, and switching losses of the DC-AC conversion system. Traditional FSTP inverter usually operates ... -
Half-bridge modular multilevel-based HVDC converters with external pre-charged capacitors for dc fault current suppression capability
Elserougi, Ahmed; Ahmed, Shehab; Massoud, Ahmed ( Institution of Engineering and Technology , 2016 , Conference Paper)Half-Bridge Modular Multilevel Converters (HB-MMCs) are defenseless against DC side faults. Different types of DC Circuit Breakers (DCCBs) assisted with arrester banks/damping resistors such as solid-state CBs and hybrid ... -
High-voltage pulse generator based on capacitor-diode voltage multiplier centrally fed from dc-dc boost converter
Elserougi, Ahmed; Ahmed, Shehab; Massoud, Ahmed ( Institution of Engineering and Technology , 2016 , Conference Paper)High voltage pulse generators are commonly used in water treatment applications. In this paper, a high voltage pulse generator with closed loop control on its output voltage is presented. The high-voltage pulse generator ... -
An isolated-boost-converter-based unidirectional three-phase off-board fast charger for electric vehicles
Elserougi, Ahmed; Abdelsalam, Ibrahim; Massoud, Ahmed ( John Wiley and Sons Inc , 2022 , Article)In this work, a novel three-phase unidirectional off-board Electric Vehicles (EVs) fast charger is proposed. Each phase of the proposed converter consists of a two-stage converter. The first stage is an AC–DC front-end ... -
An isolated-boost-converter-based unidirectional three-phase off-board fast charger for electric vehicles
Elserougi, Ahmed; Abdelsalam, Ibrahim; Massoud, Ahmed ( John Wiley and Sons Inc , 2022 , Article)In this work, a novel three-phase unidirectional off-board Electric Vehicles (EVs) fast charger is proposed. Each phase of the proposed converter consists of a two-stage converter. The first stage is an AC–DC front-end ... -
Multi-module high voltage pulse generator based on DC-DC boost converter and CDVMs for drinking water purification
Elserougi, Ahmed; Ahmed, Shehab; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)High pulsed electric field (PEF) can be used effectively in drinking water purification, by applying it across the water sample to be treated. Application of sufficient high PEF guarantees killing of harmful germs and ... -
Operation of three-phase modular multilevel converter (MMC) with reduced number of arms
Elserougi, Ahmed; Ahmed, Shehab; Massoud, Ahmed ( Institute of Electrical and Electronics Engineers Inc. , 2016 , Conference Paper)Conventional three-phase MMC consists of six-arms, each arm is controlled to generate unipolar voltage ranging from zero to Vdc where Vdc is the input DC voltage. Each arm voltage has two components (DC and AC components). ... -
Three-wire bipolar high-voltage direct current line using an existing single-circuit high-voltage alternating current line for integrating renewable energy sources in multiterminal DC networks
Elserougi, Ahmed; Massoud, Ahmed Mohamed; Abdel-Khalik, Ayman Samy; Ahmed, Shehab ( Institution of Engineering and Technology , 2016 , Article)When compared with conventional point-To-point high-voltage direct current (HVDC) systems, multiterminal HVDC (MTDC) systems are more economical and flexible. MTDC systems can tie distributed high power renewable energy ...