电动汽车无线充电系统中电屏蔽对空间磁场的影响分析

doi:10.19595/j.cnki.1000-6753.tces.180596

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Abstract In wireless power transmission system, in order to reduce the interference of external magnetic field on the charging device and improve efficiency of the whole system, an electric shield device is usually added to the primary side and secondary side equipment. In this paper, the finite element simulation model is established. The influence of electric shield on spatial magnetic field of the coupling mechanism and the efficiency of wireless power transmission system is analyzed. A 3D magnetic field measurement system was set up, and the 3D magnetic field distribution on the back of the primary and secondary equipment is measured and plotted. The results indicate that, electric shield can reduce the magnetic field near the primary and secondary equipment effectively, thereby preventing the magnetic field from spreading. The magnetic field distribution in finite element simulation is same as the measurement. The 3D magnetic field measurement system of wireless power transmission can display the distribution of spatial magnetic field intuitively, and plays an auxiliary role in design and development of the wireless power transmission device.

Key words： Wireless power transmission electrical shielding 3D magnetic field measurement planar coupled structure

Received: 12 April 2018 Published: 05 May 2019

PACS:	TM72
	TM15

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	Zhang Xian
	Wang Zhaohui
	Wei Bin
	Wang Songcen
	Yang Qingxin

Cite this article:

Zhang Xian,Wang Zhaohui,Wei Bin等. Analysis of the Influence of Electric Shield on Space Magnetic Field in Electric Vehicle Wireless Charging System[J]. Transactions of China Electrotechnical Society, 2019, 34(8): 1580-1588.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.180596 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/I8/1580

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