Wireless power transfer system based on LCC/LCL-S variable structure with constant output power

• DOI: 10.1016/j.egyr.2022.02.033
• Publication Date: 2022-02-17T11:48:47Z
• Authors: Yanjin Hou; Shuyao Sun; Zhizhen Liu; Xiaozhao Wei; Sen Qiao; Guowen Feng; Benhui Zhang
• Keywords: Wireless Power Transfer

In magnetic coupling wireless power transfer system, the relative position of coils may change during operating condition. order to solve mutual inductance variation caused by movement coils, increase anti-offset capability system achieve constant output, a variable structure is proposed in this article. Build mathematic models LCC-S and LCL-S structures analyze expressions output efficiency two structures. Design switching condition, relationship between coefficient at point parameter setting capacitor array obtained with same input voltage power. The range estimated open circuit small-voltage input, controlling strategy put forward. Analyze build loss model. It proved that harmonic can be reduced using LCC/LCL-S structure, while improved through simulation results show effectively reduce decrease total distortion (THD) 46.6%, keep THD current small wide coefficient.