Highly Efficient Three-Phase Bi-Directional SiC DC–AC Inverter for Electric Vehicle Flywheel Emulator

Alexandre De Bernardinis (), Richard Lallemand and Abdelfatah Kolli
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Alexandre De Bernardinis: LMOPS, Université de Lorraine, CentraleSupélec, F-57000 Metz, France
Richard Lallemand: SATIE, Université Gustave Eiffel, F-78000 Versailles, France
Abdelfatah Kolli: SATIE, Université Gustave Eiffel, F-78000 Versailles, France

Energies, 2023, vol. 16, issue 12, 1-15

Abstract: Flywheels are nowadays a solution for the dynamic charging of electric vehicles since they act as transient energy storage. The need for a top efficient reversible power converter for the flywheel system is crucial to assure high dynamic performance. The paper presents the design of a 50 kW highly efficient reversible three-phase DC–AC inverter involving the most recent silicon carbide metal oxide semiconductor field effect transistors, and its experimental validation on a home-made emulator. Highest efficiency in reversible mode, compactness, and thermal enhancement are the targeted objectives that have been achieved. The power converter prototype evaluated on an original pulse width modulation testing-bench is able to emulate the working of the flywheel system. High frequency pulse width modulation switching, speed cycle operating, and thermal losses are evaluated. In addition, an efficiency above 99% for the converter has been attained, enabling robust functioning of the flywheel system emulator to perform specific charging profiles for electric vehicles.

Keywords: DC–AC converter; electric vehicle; flywheel; MOS field effect transistor; modulated hysteresis method; silicon carbide (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2023
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