A 25 kW industrial prototype wireless electric vehicle charger

A 25 kW wireless charger design for electric vehicles is presented in this paper. The wireless charger consist of three phase power factor corrector (PFC), three phase resonant inverter, primary and secondary coils with series resonant compensation, and a rectifier. In the proposed design, PFC provides a constant voltage DC Bus and the whole output regulation is done by the resonant inverter. It simplifies the rectifier structure to the simple full-bridge topology. The design is verified with experiments at the output power from 0 W to 25 kW. The measured system efficiency was up to 91%.