磁谐振无线电能传输带整流滤波负载的建模与分析

Modeling and Analysis of Magnetic Resonance Wireless Power Transfer System with Rectifier Filter Load

针对磁谐振无线电能传输系统带整流滤波负载的情况,提出采用基波分析法,分别对两线圈、四线圈电流断续、四线圈电流连续情况下进行建模与分析,得到相应状态下整流滤波电路的等效输入阻抗。通过PSIM仿真以及设计制作的试验样机验证了上述分析的正确性,可为磁谐振无线电能传输系统的搭建以及进行阻抗匹配提供有效的参考。

Nowadays,more and more attention has been paid to wireless power transfer.In practice,the high frequency alternating current induced at the receiving side needs to be rectified and filtered due to the requirement of stable direct current declaring by most power consumption equipment.Considering the fact that the magnetic resonant wireless power transmission system is usually loaded with a rectifying filtering circuit; modelings and analyses are implemented to systems characterized by two-winding,four-winding discontinuous conduction,and four-winding continuous conduction; thus obtaining the equivalent input impedance of rectifying filtering circuit undera forementioned states.Above analyses are verified by both simulation through PSIM and experiments on a prototype,thus offering valid references for designing of magnetic resonant wireless power transfer system and matching of impedance.