Research on Bidirectional Wireless Power Transfer System for Electric Vehicles

Abstract

Bidirectional wireless power transfer(BD-WPT) can realize the energy conversion between electric vehicles(EVs) and the power grid. It has shown broad prospects because of the development of the practical road of wireless power transfer(WPT) and the increasing market holdings of EVs. Thus, the design methodology for a bidirectional 3 kW wireless power transfer system of electric vehicles, operating at frequency 85 kHz are proposed in this paper. And the control strategy combines phase shift control and PI control to improve system performance. Using PLECS the BD-WPT topology based on LCC compensation network is optimally designed for G2V and V2G modes. Simulation results has verified the correctness and feasibility of the proposed circuit structure and control strategy.