磁耦合谐振式无线充电系统研究

无线充电技术是一种新型的电能传输技术。文中设计了一种磁耦合谐振式蓄电池充电器，能够实现蓄电池无线充电。利用两个发生谐振耦合的电路来捕捉随距离缩减的电磁场，当发射回路和接受回路处于谐振状态时，谐振体之间能量交换可以达到很高的效率。利用变压器互感模型对磁耦合谐振无线电能传送进行了分析，设计了功率为4 kW的磁耦合谐振频率75 kHz的试验电路，实验结果表明，当传输距离为0.3 m时，效率接近90%。

Research on Magnetically Coupled Resonant Wireless Charging System

Wireless charging technology is a new power transmission technology.This paper designs a magnetically coupled resonant battery charger,achieves wireless charging battery.Using two coupled resonant circuit to capture the re-duced electromagnetic field with the reduced distance,when the transmission circuit and the receiving circuit are in the reso-nant state,the energy exchange between the resonators can achieve high efficiency.Using a transformer mutual model anal-ysis magnetically coupled resonant wireless power transmission.Designed power 4 kW,magnetically coupled resonant fre-quency of 75 kHz experimental circuit,the experimental results indicate that the transmission distance of 0.3 m,the effi-ciency approaches 90%.