Design and Performance Study of LCC-LCC and LCC-S Compensation Network for Wireless Charging of EV Battery

This work aims to study the compensation techniques used in wireless power transfer for Electric Vehicle (EV) charging application. Though there are several topologies for wireless power conversion Dual Active Bridge (DAB) configuration, better suits with wireless power transfer for its bidirectionality, high power density, ease of implementation and so on. Compensation network enhances the performance of the DAB in providing the constant current (CC) or constant voltage (CV) according to the battery charging status. This paper details the study on the performance of LCC-LCC topology and LCC- S topologies. The design values of magnetic elements of the compensation network are calculated analytically. The LCC-LCC and LCC- S compensations implementation in DAB converter is simulated in MATLAB/Simulink. The results were obtained and compared with the symmetrical LCC and LCC- S compensation on the factors of efficiency, output power, transmitter current and receiver current.