谐振式无线电能传输系统线圈优化与实验验证

Coil Optimization and Experimental Verification of the Magnetic Coupling Resonance Wireless Power Transfer System

针对大功率磁耦合谐振式无线电能传输(MCR-WPT)系统谐振线圈耦合系数较小的特点,首先采用电路理论对系统进行建模分析,然后通过公式的推导与分析提出一套线圈优化设计方案,并基于有限元仿真方法得出一组最优线圈参数,最后搭建了一套1 kW,20 kHz大功率MCR-WPT系统实验平台对所提方案进行了仿真与实验验证,实验结果表明系统传输效率高达91.5%,满足设计要求。

Aim at the fact that the coupling coefficient of the resonant coil is relatively small in the high-power wireless power transfer system based on magnetic coupling resonances(MCR-WPT).Firstly,a model is set up by using the circuit theory to analyze the charging system.Then , a new optimized design scheme for coils through formula deduction and analysis is proposed.And then we gain a set of optimal coils parameters based on the finite element simulation method. Finally, the experiment study of the designed resonant coils is done by building the 1 kW, 20 kHz high-power MCR-WPT system experimental platform.The experimental results show that the transmission efficiency of the system is higher than 91.5% and the design requirements are achieved.