Browsing by Author "Bojoi, R."
Now showing items 1-4 of 4
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Exploitation of additional degrees of freedom of multiphase drives in low-frequency operation of modular multilevel converters
Daoud M.; Elserougi A.; Abdel-Khalik A.; Massoud A.; Bojoi R.; Ahmed S.... more authors ... less authors ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Conference Paper)MMC encounters serious limitations in the zero and low-frequency operation of variable-speed motor drives. In MMC, the voltage ripples of SubModule (SM) capacitor is inversely proportional to the phase current frequency. ... -
Hybrid-boost modular multilevel converter-based medium-voltage multiphase induction motor drive for subsea applications
Daoud M.; Elserougi A.; Massoud A.; Bojoi R.; Abdel-Khalik A.; Ahmed S.... more authors ... less authors ( Korean Institute of Power Electronics , 2019 , Article)This paper proposes a hybrid-boost Modular Multilevel Converter (MMC) for the Medium-Voltage (MV) Variable Speed Drives (VSDs) employed in subsea applications, such as oil and gas recovery. In the presented architecture, ... -
Series-Connected Multi-Half-Bridge Modules Active Front-End Rectifier for Medium Voltage Variable Speed Drives
Daoud M.; Elserougi A.; Massoud A.; Bojoi R.; Ahmed S. ( Institute of Electrical and Electronics Engineers Inc. , 2018 , Conference Paper)Medium-Voltage Variable Speed Drives (VSDs) are the backbone of several critical industries. Providing the proper dc-link voltage to support the VSD's converter is crucial. Conventionally, dc-link voltage is supplied either ... -
Zero-/Low-Speed Operation of Multiphase Drive Systems With Modular Multilevel Converters
Daoud, M.I.; Elserougi, A.A.; Massoud, Ahmed; Bojoi, R.; Abdel-Khalik, A.S.; Ahmed, S.... more authors ... less authors ( Institute of Electrical and Electronics Engineers Inc. , 2019 , Article)Modular multilevel converter (MMC)-based AC motor drives are emerging trend-research. They ease medium-/high-voltage handling in high-power applications with reduced footprint and life-cycle costs. A known challenge ...