LCL/LCC resonant topology of WPT system for constant current, stable frequency and high-quality power transmission

A new-type wireless power transfer system with LCL/LCC topology is proposed, in which the primary coil current and output current can keep nearly constant with the load resistance variation through parameters optimization. Also, it can make the system work in totally resonant state all the time. Further, the topology is improved to lower the total harmonic distortion of inverter output current and achieve high-quality power transmission. Meanwhile, the availability of the proposed LCL/LCC topology and its improved topology is supported by experiments.