无线电能传输的双边LCL补偿网络建模与分析

Modeling and analysis of bilateral LCL compensation network for wireless power transfer

利用双边LCL谐振补偿网络,实现磁耦合谐振式无线电能传输系统(MCR-WPT)在一些应用场合需要恒流输出的要求.首先,对LCL谐振网络进行建模与分析.其次,采用电路互感理论构建双边LCL谐振补偿磁耦合结构的等效电路模型,提出其参数配置的方法并对其性能进行分析.最后,通过样机实验,验证所提出参数配置方法和理论分析的可行性和正确性.实验样机的输出电流波动小于3%,在负载电阻大于100Ω时,整机效率可达到90%以上.

The bilateral LCL resonant compensation network is used to realize the requirement of constant current output in some applications of magnetically coupled resonant wireless power transfer system(MCR-WPT).Firstly,the LCL resonant network is modeled and analyzed,respectively.Secondly,equivalent circuit model of the bilateral LCL resonant compensated magnetic coupling structure is established with the theory of circuit mutual inductance.The parameter design method is proposed,and its performance is also analyzed.Finally,the feasibility and correctness of the proposed parameter design method and theoretical analysis are verified by the experiments.Experimental prototype of the output current fluctuation is less than 3%.When the load resistance is greater than 100Ω,the efficiency of the prototype can reach above 90%.