电动汽车无线电能传输系统建模与电磁安全评估

从线圈结构和双边LCC补偿拓扑两方面开展了无线电能传输系统的优化设计，以实现指定的输出功率和最高的传输效率。为了研究无线充电环境中电磁场对人体的影响，通过三维电磁场仿真软件构建了一个完整的电磁环境仿真系统，包含了无线充电系统、电动汽车和具有重要器官的人体模型。模拟了以下7个场景：成人站在电动汽车后面；成人坐在电动汽车的左前、右前、左后和右后方；成人躺在电动汽车后面；儿童躺在电动汽车后面（最坏情况）。仿真结果表明，对于22kW的高功率无线充电环境，躺姿势儿童的心肺和躺姿势成人的心脏超出了国际非电离辐射防护委员会规定的感应电场基本限值。由于车辆外壳的屏蔽和人体与利兹线的距离，坐在车内的场景对人们是安全的。

Modelling and Electromagnetic Safety Evaluation of Wireless Power Transfer System for Electric Vehicles

The wireless power transfer system optimal design is conducted from aspects of magnetic couplers and the double-sided LCC compensation topology to achieve the specified output power and highest transmission efficiency. Then, a complete simulation system including the wireless power transfer system, the electric vehicle, and the human models with vital organs are established. Simulation results show that, under the 22kW high-power system, the heart and lungs of the lying child and the heart of the lying adult exceed the basic restriction of the internal electric field value specified by ICNIRP. The scenarios of sitting inside the vehicle and standing behind the vehicle are safe for people due to the shielding of the vehicle shell and the distance from the Litz wire.