Design and Analysis of a New Configuration for LCC-LCC-Compensated WPT System Using Bilateral Absolute Phase Shift Control

This paper presents a new configuration of LCC-LCC compensation network for Wireless Power Transfer (WPT) system with active full-bridges on both sides. WPT system equipped with active full-bridges on both sides has higher control flexibility, such as phase shift control on each full-bridge and phase difference control between inverter and rectifier which also enables the bidirectional power transfer. Based on our previous works that realized the synchronization and joint control of inverter and active rectifier utilizing integrated near-field-based communication, we re-configurated the LCC-LCC-compensation in this work so that the WPT system can achieve improvements in terms of power factor, ac-efficiency and wider zero-voltage-switching area for the range of control parameters (triple phase shift control) and system parameter (coupling factor) variations. A comparison with the conventional LCC-LCC-configuration is given.