A control technique for Inductively Coupling Power Transfer systems

This paper presents a power transfer technique for Inductively Coupling Power Transfer (ICPT) Systems by searching suitable switching frequency based on the maximum DC power supply current. To verify the proposed control strategy, an ICPT system is implemented by a full-bridge resonant inverter that is compensated its switching losses by capacitors on both primary and secondary sides. The analysis and design techniques for the ICPT system are presented. By using the proposed control method, the maximum power transfer can be accomplished, even though the shape of coil, the capacitor compensation topologies and air-gap are changed. The experimental results prove that the maximum power transfer can be successfully achieved.