电动汽车无线电能传输系统建模与电磁安全评估  

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

作　　者：李马炎 张希[1] LI Mayan;ZHANG Xi(State Engineering Laboratory of Automotive Electronics,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学汽车电子控制技术国家工程实验室,上海200240

出　　处：《电源学报》2023年第4期177-185,共9页Journal of Power Supply

基　　金：国家自然科学基金资助项目(51677118);国家重点研发计划重点专项资助项目(2017YFE0102000)。

摘　　要：从线圈结构和双边LCC补偿拓扑两方面开展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7个场景:成人站立于车后方;成人坐于车内左前、右前、左后和右后方;成人躺卧于车后方;儿童躺卧于车后方(最坏情况)。仿真结果表明,对于22 k W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,坐在车内和站立于车后的场景对人们是安全的。The optimal design of a wireless power transfer(WPT) system is conducted from aspects of coil structure and the double-sided LCC compensation topology to achieve the specified output power and the highest transmission efficiency.To study the influence of electromagnetic field on human body in a wireless charging environment,a simulation system of a complete electromagnetic environment including a wireless charging system,an electric vehicle,and human models with vital organs is established.Seven scenarios are simulated,i.e.,an adult standing behind the vehicle,an adult sitting in the left front,right front,left rear,and right rear inside the vehicle,respectively,an adult lying at the back of the vehicle,and a child lying at the back of the vehicle(the worst case).Simulation results show that,under the 22 kW high-power wireless charging environment,the heart and lungs of the lying child and the heart of the lying adult suffer from a value which exceeds the basic restriction on the internal electric field value specified by ICNIRP.Due to the shielding of the vehicle shell and the distance between the human body and the Litz wire,the scenarios of sitting inside the vehicle and standing behind the vehicle are safe for people.

关 键 词：无线电能传输 磁耦合机构 双边LCC补偿拓扑 电磁安全 

分 类 号：TM154[电气工程—电工理论与新技术] TM724