基于E类逆变器的WPT系统线圈抗偏移研究

Research on anti-offset of WPT system coil based on class E inverter

现有无线电能传输(WPT)系统中普遍存在元器件参数选型难,且常见线圈类型抗偏移能力普遍较弱。本文基于推挽式E类逆变器构建SS型拓扑结构磁耦合谐振式WPT(MCR-WPT)系统,计算系统中元器件参数,并推导其最大效率负载条件,同时提出同半径圆角矩形线圈设计,对同面积内不同条件线圈传输效率及抗偏移能力进行比较。仿真结果表明:耦合线圈结构与参数对传输性能有明显影响,在同等最佳负载条件下,所提线圈较其他常见类型线圈传输性能有所提升,最后通过实验验证仿真结果。

Existing wireless power transmission(WPT)systems generally have the problems of difficulty in selecting component parameters and generally weak anti-offset ability of common coil types.Therefore,this article is based on the push-pull class E inverter to construct an SS-type topological structure magnetic coupling resonance wireless power transmission(MCR-WPT)system,calculate the parameters of the components in the system,and derive the maximum efficiency load conditions,and propose the same radius circle corner rectangular coil design compares the transmission efficiency and anti-offset ability of coils under different conditions in the same area.The simulation results show that the structure and parameters of the coupled coil have a significant impact on the transmission performance,under the same optimal load conditions,the transmission performance of the coil is improved compared with other common coil types.Finally,the simulation results are verified through experiments.