A Comparative Study of Power Supply Architectures in Wireless EV Charging Systems

A Comparative Study of Power Supply Architectures in Wireless EV Charging Systems

Abstract— A Comparative Study of Power Supply Architectures in Wireless EV Charging Systems. Two of the primary power supply architectures being predominantly used for wireless electric vehicle < Final Year Projects 2016 > EV charging, namely the series LC resonant (SLC) and the hybrid series-parallel (LCL) resonant full-bridge (FB) inverter topologies. The study of both of these topologies is presented in the context of designing a 3 kW, primary side controlled, stationary wireless EV charger with nominal operating parameters of 30 kHz center frequency, a range of coupling in the neighborhood of .18-.26, and a parallel secondary pick-up with partial series coil compensation. A comparison of both architectures is made in terms of their design methodology, physical size, cost, complexity, and efficiency. It is found that the SLC architecture is 2.45% less costly than the LCL topology.