电动汽车无线充电线圈偏移情况下的效率提升

Efficiency Improvement of Coil Misalignment for Electric Vehicles Wireless Charging

电动汽车无线充电过程中线圈偏移问题经常发生,可能造成系统传输效率的降低和增加系统的不稳定性。针对两种电动汽车无线充电过程中出现的线圈偏移问题进行了互感、传输效率的理论计算与分析。在此基础上,运用Matlab对线圈科学设计、阻抗网络优化、平板磁芯耦合的3种无线电能传输系统进行仿真。结果表明3种方法均能有效提高充电系统线圈偏移情况下无线电能的传输效率。

In the process of wireless charging of electric result in the decrease of system transmission efficiency vehicles, the coil misalignment often occurs, which may and the increase of the instability of the system. The theoretical calculation and analysis of the mutual inductance and transmission efficiency of two kinds of coil de- viation occurred in the process of wireless charging for electric vehicles are done. On this basis, three kinds of radio transmission systems on scientific coil design, impedance network optimization, and planar core coupling are simulated on Matlab. The results show that the three methods can improve the transmission efficiency of the wireless power transmission system, while coil deviation occurring in the process of wireless clarging.