Three–Phase Inductive Wireless Power Transfer (IWPT) System with High Frequency Three–level Inverter and Double LCC Resonance

This paper presents a three-phase power-up inductively coupled wireless power transfer (IWPT) system with a new circuit topology with three level high frequency inverters (TLHF-INV) and double-LCC compensation tanks. Moreover this system includes one output regulation by PS- PWM and the details are discussed in this paper. Double-LCC compensation tanks feature smooth output curve with long gap length, which means the output power will be insensitive with gap interference. Furthermore, the feasibility of Double-LCC tank has been proved in a previous research by Lyapunov's 1
^st
method in cybernetic. In this paper, the three-phase system is simplified to a single-phase circuit and several essential characteristics are considered based on it. As a controllable three level PS-PWM resonant converter, there occurs probable voltage mutation which causes hard switching if the switching frequency is not set into a suitable range. Thus, the specific modulation (VFPS-PWM) rule and guideline are given and its algorithm implement is mentioned as a future work.