电动汽车双边LCC无线充电系统传导电磁干扰

Conducted electromagnetic interference of wireless charging system with bilateral LCC of electric vehicle

对电动汽车双边LCC拓扑结构无线充电系统传导电磁干扰进行研究,依据标准SAE J2954构建了3.7 kW的无线充电系统传导电磁干扰高频电路模型,采用测量和理论计算结合的方法,提取耦合线圈、线缆和补偿电路元件的高频寄生参数。利用软件ANSYS Maxwell和Simplorer进行系统传导干扰建模仿真分析,通过仿真结果可以看出,在150 kHz~30 MHz频段共模干扰比差模干扰显著。通过系统传导发射试验验证了仿真模型的准确性。

The conducted electromagnetic interference of the wireless charging system with the bilateral LCC structure of electric vehicles is studied.According to the standard SAE J2954,a high-frequency circuit model of the conducted electromagnetic interference of the wireless charging system with a power of 3.7 kW is constructed.A method combining measurement and theoretical calculation is used to extract the high-frequency parasitic parameters of the coupling coil,cable and compensation circuit components.The modeling and simu-lation analysis of the conducted interference of the system are carried out by using the software ANSYS Maxwell and Simplorer.Simulation results show that the common mode interference is more significant than the differential mode interference in the frequency band of 150 kHz-30 MHz.The accuracy of the simulation model is verified by the conducted emission experiment of the wireless charging system.