Abstract：Wireless energy transfer by coupled magnetic resonances is a popular technology which energy can be transferred via coupled magnetic resonances in the non-radiative near-field. This paper proposes a four coils magnetic resonance system with relay. Based on circuit analysis and simulation, we designed and optimized circuit parameter of the system to make the system worked at magnetic resonance. Experimental results show that with relay the end-end efficiency is 33.4%, while the end-end efficiency is just 22.1% without relay. With relay the end-end efficiency can increase 11.3% comparing with the efficiency without relay; the maximum transfer distance can increase about twice of coil diameter comparing with the distance without relay. Experimental results indicate that relay can increase the end-end system efficiency and the transfer distance of a magnetic resonance system.
戴旭光, 俞凯, 陈谦, 谭冲, 周志刚, 卜智勇. 基于磁共振的中距离无线能量中继传输[J]. 电工技术学报, 2013, 28(2增): 47-50.
Dai Xuguang, Yu Kai, Chen Qian, Tan Chong, Zhou Zhigang, Bu Zhiyong. Midrange Wireless Energy Transfer System with Relay via Magnetic Resonance
. Transactions of China Electrotechnical Society, 2013, 28(2增): 47-50.
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