A Novel Wireless Power Transfer System with Two Transmitting Coils for Three Resonant Frequencies and Four Receivers

This paper proposes a novel wireless power transfer system, which can deliver three different resonant frequencies to four receivers with only two transmitting coils. It uses a three-phase high frequency inverter and two transmitting coils to deliver power to different loads with different resonant frequencies. It can realize four operating modes, including three independent resonant frequencies transmission and concurrent double frequency transmission. All these four modes are analyzed in detail. In addition, a prototype is built to verify the proposed system experimentally.