1. Institute of Mechanical and Electronic Information Engineering China University of Mining & Technology (Beijing) Beijing 100083 China; 2. Department of Electronics and Electrical Engineering Nanyang Institute of Technology Nanyang 473004 China
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%.
田子建,陈健,樊京,林越,李玮祥. 基于磁负超材料的无线电能传输系统[J]. 电工技术学报, 2015, 30(12): 1-11.
Tian Zijian,Chen Jian,Fan Jing,Lin Yue,Li Weixiang. The Wireless Power Transfer System with Magnetic Metamaterials. Transactions of China Electrotechnical Society, 2015, 30(12): 1-11.
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2015, Vol. 30 
