基于磁负超材料的无线电能传输系统

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Abstract For the high distance constraint degree of magnetically-coupled resonant wireless power transfer (MCR-WPT) system transmissionefficiency, this paper analyzed and discussedthe effect of negative magnetic metamaterial on transmission efficiency of MCR-WPT system, deduced and verified the enhancement ofthe transmission of the evanescent wave with negative magnetic metamaterial. A MCR-WPT systemworking at ISM band was constructed and a low frequency spiral negative magnetic metamaterials suited tothe MCR-WPT system was designed in the platform of HFSS.Thenegative magnetic metamaterialdielectric-slab shows negative magnetic properties at the working frequency above 25MHz. The transmission efficiency of MCR-WPT system configured with spiral negative magnetic metamaterials in different positions was studied. Simulation and experimentresults show that the system transmission efficiency could be improved significantly, when the little-size negative magnetic metamaterials are placed at the transmitting terminal or the middle-size negative magnetic metamaterials are placed at the receiving terminal.Within a fixed transmission distance, the efficiency of the system with magnetic metamaterials has been improved at leastby 20%. In experiments, it has been improved by 30%.

Key words： MCR-WPT magnetic metamaterials HFSS transmissionefficiency

Received: 14 July 2014 Published: 14 September 2015

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TM72

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	Tian Zijian
	Chen Jian
	Fan Jing
	Lin Yue
	Li Weixiang

Cite this article:

Tian Zijian,Chen Jian,Fan Jing等. The Wireless Power Transfer System with Magnetic Metamaterials[J]. Transactions of China Electrotechnical Society, 2015, 30(12): 1-11.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2015/V30/I12/1

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