Design and Control for ZVS Constant Current and Constant Voltage Wireless Charging Systems

Abstract

This paper proposes a design and control method for double sided LCC compensation network based wireless charging to obtain both constant voltage (CV) and multiple constant current (CC) characteristics which is suitable for stationary charging system without the need of additional electronic components requirement while maintaining input zero phase angle (ZPA) condition for a wide range of load variations. Proper control strategies are also presented to realize soft switching of power switches. The validity of the proposed concept is demonstrated by both theoretical analysis and computer simulations. Experimental results verify the feasibility of the proposed system.