摘要
利用FEKO建立适合电磁仿真的坐姿人体模型和汽车车身模型,对电动汽车的主要电磁辐射源进行简化和仿真,得到在电机、DC/DC变换器、天线这些激励下的车内电磁环境,并对人体及主要器官进行比吸收率(SAR)的仿真计算。结果表明,在100-900 MHz时,车内人体比吸收率都满足限值,其中SAR较大的组织是皮肤与大脑,这为电动汽车中的人体电磁安全研究提供了参考依据。
A seating human model and a car body model,suitable for electromagnetic simulation,were established in FEKO.Main electromagnetic radiation sources of electric vehicles were simplified and a simulation was carried out.The electromagnetic environment inside the car was obtained under the electromotor,DC/DC convertor and antenna.SAR of human body and main organs were also computed.The result shows that SAR of occupants inside a car satisfies the limit when the frequency is the commonly used communication frequency 100-900 MHz,the SAR of skin and brain is much larger,providing references for researches on personal electromagnetic safety in electric vehicles.
基金
国家"863"项目(2011AA11A210
2011AA11A220)
汽车仿真与控制国家重点实验室项目(20111109)
关键词
比吸收率
电动汽车
仿真
电磁安全
SAR
electric vehicle
simulation
electromagnetic safety