The analysis of series — Parallel — Parallel compensation current source inverter for wireless power transfer in EVs charging application

This paper proposes a parallel-parallel resonant current source inverter with a series inductor. The main function of the additional series inductor is to limit the di/dt of the inverter current by adjusting the overlapped time while the order of the system remains intact. The ZCS operational region and frequency response of the resonant load with load variation are investigated. The parallel-parallel resonant circuit results in high primary pad current with low inverter current. The phase lock loop control with overlap angle adjustment is selected in order to support load changing and operate in ZCS condition. Finally, the presented topology is mainly validated by the experiments.