COILS AND LCC COMPENSATION CIRCUIT DESIGN IN WIRELESS POWER TRANSFER SYSTEM FOR AUTOMATED GUIDED VEHICLE CHARGING APPLICATION

Abstract

This paper proposes a method to design coils and LCC compensation circuits in wireless power transfer systems for automated guided vehicle charging applications. The simulation method of finite element analysis (FEA) is used to design the coil. The coupling coefficient characteristic is analyzed to determine the effect of the misalignment. The LCC compensation circuit is designed for both transmitter and receiver. The resonant circuit analysis method is presented in detail. In addition, the paper also provides optimal loading conditions to maximize transfer efficiency. A 2.5kW charging system prototype was constructed. Experimental results show that the maximum system efficiency is achieved by 90.9%.