磁耦合谐振式无线电能传输系统的四线圈模型研究

Research on the Four Coil Model of Magnetically-coupled Resonant Wireless Power Transmission Systems

针对目前磁耦合谐振式无线电能传输系统的四线圈结构理论不完善的问题,提出了四线圈磁耦合谐振式无线电能传输系统的互感耦合理论模型,并用Matlab对四线圈无线电能传输系统的传输效率与线圈尺寸、互感系数和距离等参数之间的关系进行了详细的仿真分析。最后,搭建了四线圈磁耦合谐振式无线电能传输系统实物模型,测量并分析了不同线圈间的距离对系统传输效率和负载电压的影响,验证了理论分析与实验数据的一致性,为分析磁耦合谐振式无线电能传输的四线圈结构提供了新的理论依据。

In order to enrich the theory of the present four coils magnetically-coupled resonant wireless power transmission system, a mutual inductance coupling theoretical model about four coil magnetically-coupled resonant wireless transmission systems is put forward. The relationship between the system transmission efficiency and the parameters such as coil sizes, mutual inductance coefficient and distance are analyzed by Matlab in detail. Finally,the four coil magnetically-coupled resonant wireless transmission system is established, and the transfer efficiency of the system with respect to the distance between coils is measured and analyzed, and the consistency of the theoretical analysis is verified with the experimental data, a new theoretical basis is provided for the analysis of four coil structure about magnetically-coupled resonant wireless power transmission.