Wireless Power Transfer System Integration with an On-Board Conductive Charger for Plug-in Electric Vehicles

This paper proposes a novel topology for integrating the receiver coil of a wireless power transfer system with the electric vehicle's onboard bidirectional conductive charger. The system is designed to operate at two frequency bands to satisfy the power density requirement of a bidirectional onboard charger while keeping compliant with the working frequency and interoperability requirements proposed by the SAE J2954 for a wireless power transfer system. Through component sharing between the two sub-systems, a reduction in the overall size and cost of the onboard electronics is achieved. Simulation results are provided to validate the fundamental operation of the proposed circuit. Finally, a prototype is built to validate the assumptions.