Circuit Analysis and Simulation Modelling of a LCC-LCC Compensation Network Resonant Converter for Wireless Power Transfer Applications

Wireless power transfer (WPT) eliminates the need for wires to transfer power, making it more convenient, reduces risk of hazard caused by cables and allows self-driving battery powered vehicles to charge without human operation. However, the wireless power transfer efficiency decreases dramatically as misalignment between the transmitter (Tx) coil and receiver (Rx) coil increases. In this paper, LCC-LCC compensation network is integrated into the design of the WPT system to improve both misalignment and output load tolerance of the WPT system. Kirchhoff’s Voltage Law (KVL) was done, and the equations produced were used to calculate the values of the components and a MATLAB Simulink simulation model was constructed. The simulation results will be compared with theoretical calculations to verify the mathematical equations. The design of a 30V, 2.5A, 75W LCC-LCC compensation network resonant converter operating at 85kHz achieved an efficiency of 81%.