A Multi-Mode Three-Phase Bidirectional CLLC Resonant Converter

Aiming at the V2G mode of new energy vehicles, this paper adopts three control strategies to make the three-phase CLLC resonant converter carry out energy transmission in half-bridge, full-bridge and three-phase mode respectively. In these three control modes, the three-phase CLLC resonant converter can not only achieve bidirectional power transmission, but also have different power transmission modes, so that it can be applied in different power demand scenarios. Therefore, a three-phase bidirectional CLLC resonant converter with fixed power of 2kW, rated input voltage of 400V and output voltage of 500V is designed in this paper. Finally, PLECS is used to verify the theoretical simulation results. The simulation results show that the designed three-phase bidirectional CLLC resonant converter can realize the bidirectional power transmission of three modes respectively.