基于SCC结构的低频磁耦合谐振无线输电系统

摘要

In the low frequency four coil magnetically resonant wireless power transfer(MRC-WPT) system,an improved switch control capacitor(SCC) compensation structure is introduced,which realizes the dynamic capacitance compensation of the system drive coil by adjusting the phase shift angle of the switch drive pulse in the SCC structure.It resolves the imprecise problem of step capacitance compensation of the system,it is also provided the conditions for the system to realize the dynamic capacitance compensation and be able to carry out the high efficiency transmission under the change condition.Finally,simulation and experimental results verify the correctness of the theoretical analysis and the feasibility of the SCC structure.%在低频磁耦合谐振四线圈无线输电(MRC-WPT)系统中,引入一种改进的开关控制电容(Scc)补偿结构,通过调节SCC结构中开关管驱动脉冲的移相角,实现对系统驱动线圈的精确电容补偿,解决了系统投切电容器组的有级补偿不精确的问题,也为系统实现动态电容补偿并能在变化条件下进行高效无线输电提供了条件.仿真和实验验证了理论分析的有效性以及SCC电容补偿结构实施的可行性.