电动汽车无线充电线圈对人体电磁暴露水平评估  

Evaluation of electromagnetic exposure level of electric-vehicle wireless charging coil to human body

作　　者：牟文婷 逯迈 MOU Wenting;LU Mai(Key Laboratory of Opto-Electranic Techonlogy and Intelligent Control,Ministry of Education,Lanzhou Jiaotong University,Lanzhou 730070,China)

机构地区：[1]兰州交通大学光电技术与智能控制教育部重点实验室,甘肃兰州730070

出　　处：《甘肃农业大学学报》2021年第4期162-169,共8页Journal of Gansu Agricultural University

基　　金：国家自然科学基金项目(51567015,51867014).

摘　　要：【目的】为有效评估电动汽车磁耦合谐振无线充电线圈对车内驾驶员人体电磁暴露安全性.【方法】基于有限元仿真软件COMSOL Multiphysics,设计电动汽车模型、磁耦合谐振无线充电线圈模型和车内驾驶员人体模型,分别仿真计算了在22 kHz和60 kHz的谐振频率下,充电功率为22.5 kW时驾驶员人体的磁感应强度和感应电场强度大小.【结果】磁耦合谐振无线充电线圈工作在22 kHz和60 kHz时,驾驶员人体在电动汽车内部的磁感应强度最大值分别为0.65μT和0.24μT,感应电场强度最大值分别为0.02 V/m和0.0157 V/m,其电磁暴露水平远小于国际非电离辐射防护协会(international commission on non-ionizing radiation protection,ICNIRP)制定的磁感应强度和感应电场强度公众暴露限值.【结论】仿真结果说明电动汽车磁耦合谐振无线充电线圈不会对车内驾驶员的健康构成危害.【Objective】In order to effectively evaluate the safety of electromagnetic exposure of the magnetic coupling resonance wireless charging coil of electric vehicle to the driver′s body in the vehicle.【Method】The finite element simulation software COMSOL Multiphysics was used to build electric-vehicle model,magnetic-coupling-resonance wireless charging coil model and driver's body model in the vehicle.Both the strength of magnetic induction and the strength of electric field induced to driver's body were calculated when charging power was 22.5 kW,and resonant frequencies was at 22 kHz and 60 kHz,respectively.【Result】When the magnetic coupling resonance wireless charging coil worked at 22 kHz and 60 kHz,the maximum strength of magnetic induction to driver's body in electric vehicle was 0.65μT and 0.24μT,respectively,and the maximum electric-field strength induced was 0.02 V/m and 0.0157 V/m,respectively.The level of electromagnetic exposure was far less than the public-exposure limits of both magnetic induction strength and induced electric field strength formulated by the International Commission on Non-Ionizing Radiation Protection(ICNIRP).【Conclusion】The simulation results indicated that the magnetic coupling resonance wireless power transmission system of electric vehicle will not pose harmful impact on the health of drivers in the vehicle.

关 键 词：磁耦合谐振 无线充电 电动汽车 电磁暴露 

分 类 号：TM15[电气工程—电工理论与新技术]