A Study on the Shielding for Wireless Charging Systems of Electric Vehicles

被引：0
作者：
Cui, Hongzhi [1 ]
Zhong, Wenxing [1 ]
Li, Hao [1 ]
He, Fengchun [1 ]
Chen, Min [1 ]
Xu, Dehong [1 ]
机构：
[1] Zhejiang Univ, Inst Power Elect, Hangzhou 310027, Zhejiang, Peoples R China
来源：
THIRTY-THIRD ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2018) | 2018年
关键词：
electric vehicles; wireless power transfer; electromagnetic field; electromagnetic shielding;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
With a high power level and a large transfer distance in a wireless charging system of electric vehicles, human exposure to electromagnetic filed becomes a major concern. In this paper, some key parameters of an aluminum plate and ring shield are studied with the aid of finite-element analysis. The shielding effectiveness and the power transfer efficiency are investigated simultaneously as one of the parameters changes. It is found that the shielding effect mainly depends on the size of the shield while increasing the distance between the shield and the ferrite layer attenuates efficiency drop due to the eddy-current loss in the shield. A 3.3kW wireless charging system with 20cm air gap was built to verify the simulation results.
引用
收藏
页码：1336 / 1343
页数：8
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