Realization of CC and CV Mode in IPT System Based on the Switching of Double-sided LCC and LCC-S Compensation Network

Inductive power transfer (IPT) is the most wide method of wireless power transfer (WPT). In this paper, based on switching double-sided LCC and LCC-S compensation network, constant voltage (CV) output and constant current (CC) output under the conditions of the fixed resonance frequency are realized. The equivalent models of leakage inductance for CC output and mutual inductance equivalent model for CV output are built respectively in IPT system. The zero phase angle (ZPA) between input voltage and input current can be achieved in both CC mode and CV mode to achieve high efficiency. A wireless power transfer system with 3.3 kW is built, which validates the proposed theory.