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Bidirectional Converters (AC-DC Focus)

D01.10 - Design and Implementation of a Bidirectional Vienna Converter for On-Board Charger

Thursday, March 26, 2026
12:00 PM - 1:45 PM CT
Location: Hemisfair Ballroom
In this paper, a 3-φ bidirectional Vienna converter (BVC) is discussed. When grid provides power to EV, the average current control is used to achieve power factor correction; When EV provides energy to grid, time domain sinusoidal PWM is adopted to regulate the energy fed into the grid. In addition, silicon carbide power devices are implemented to enhance the efficiency and power density. A 3-φ BVC is implemented with grid voltage of 220 V, bus voltage of 800 V, rated power of 10 kW, and switching frequency of 40 kHz. The highest power factor is 0.998 with THDi of 3.94%. In dc-ac mode, the BVC reaches the highest efficiency of 98.3% at Pac=8 kW and achieves the lowest THDi of 4.84% under Pac=10 kW.