摘要
基于耦合电感理论建立了4线圈磁耦合谐振无线电能传输(MCR-WRT)系统的电路模型,根据该模型推导出耦合系数、能量传输距离和能量传输效率之间的数学关系。针对4线圈MCR-WRT系统能量传输效率随传输距离变化而变化的现象,提出利用开关切换不同半径谐振器耦合线圈来匹配不同传输距离的方法。为验证该方法的有效性,进行了电磁仿真、电路仿真和实验分析。结果表明,采用这种方法有效地提高了系统在不同传输距离下的能量传输效率。
Based on the coupling inductor theory, circuit model of the four coils magnetically resonant coupling wireless power transfer（MCR-WPT） system is built.Mathematical relations of coupling coefficient, energy transfer distance and energy transfer efficiency is derived under this model.To overcome the difficulty of the transfer efficiency changes significantly when energy transfer distance changes, a method of coupling coils is proposed with different diameter match the different energy transfer distance using switch.To verify the effectiveness of the method,electromagnetic simulation, circuit simulation and experimental analysis are made.The results show that the method improves energy transfer efficiency of the system under different energy transfer distance.
出处
《电力电子技术》
CSCD
北大核心
2014年第7期22-23,41,共3页
Power Electronics
基金
宿州学院煤矿机械与电子工程研究中心开放课题(2014YKF14)
宿州学院自然科学研究项目(2014CXY02)~~
关键词
无线电能传输
磁耦合谐振
能量传输效率
耦合线圈
wireless power transfer
magnetically resonant coupling
energy transfer efficiency
coupling coils
