电动汽车中人体SAR值的FEKO仿真
Simulation of Computed SAR of Occupants in Electric Vehicle based
on FEKO
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。
关键词 比吸收率;电动汽车;仿真;电磁安全
Abstract 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.
Keywords SAR; electric vehicle; simulation; electromagnetic safety
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