Inhibition of current harmonics in LCL/LCC wireless power transfer system

Aimed at the distortion problem of the inverter output current when LCL/LCC wireless power transfer system is under light load, an additional LC band-pass filter can lower the total harmonic distortion to achieve high-quality power transmission. Meanwhile, the output current can still be kept nearly constant and the system work is in totally resonant state. Simulated results indicate that the distortion of the inverter output current is reduced effectively on the base that system features are still stable by adding a LC band-pass filter to the system. Moreover, the proposed method is supported by simulation and experiment.