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Exposure Assessment of a 20-kW Wireless Power Transfer System for Electric Vehicles
International Journal of Automotive Technology ( IF 1.6 ) Pub Date : 2020-11-12 , DOI: 10.1007/s12239-020-0127-3
Beomjin Choi , Eunha Kim , Waegyeong Shin , Sangwook Park , Kichai Kim

Wireless power transfer technology is essential for autonomous electric vehicles. Electric vehicles demand increasingly higher power outputs. Therefore, it is necessary to study the harmfulness of human body exposure to electromagnetic waves generated in a wireless power transfer system. This study provides exposure assessment for a 20-kW wireless power transfer for electric vehicles. The electromagnetic field distribution of a 20-kW wireless power transfer system is analyzed for the two cases where the transmitting and receiving pads are aligned with the small gap and not aligned with the large gap, and compared with the results of the experimental measurements. Moreover, when the system (not aligned with the large gap) is installed in an electric vehicle, analysis of the exposure is carried out. Finally, dosimetry is performed on the exposure scenario in which the human body is placed around the vehicle, and the induced values inside the human body are compared with the internation guidelines. As a result, the induced values exceed the basic restrictions for the fat and the muscle of the human body, but not for the central nervous system.



中文翻译:

电动汽车20 kW无线电力传输系统的暴露评估

无线电力传输技术对于自动驾驶电动汽车至关重要。电动汽车要求越来越高的功率输出。因此,有必要研究人体暴露于无线电力传输系统中产生的电磁波的危害。这项研究为电动汽车的20 kW无线功率传输提供了暴露评估。分析了两种情况下的20 kW无线功率传输系统的电磁场分布,在这种情况下,发射和接收垫对准小间隙,不对准大间隙,并与实验测量结果进行比较。此外,当将系统(未与大间隙对准)安装在电动车辆中时,进行曝光分析。最后,在人体被放置在车辆周围的暴露情况下进行剂量测定,并将人体内部的感应值与国际准则进行比较。结果,感应值超过了人体脂肪和肌肉的基本限制,但没有超过中枢神经系统的基本限制。

更新日期:2020-11-12
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