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| Midrange Wireless Energy Transfer System with Relay via Magnetic Resonance
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| Dai Xuguang, Yu Kai, Chen Qian, Tan Chong, Zhou Zhigang, Bu Zhiyong |
| Shanghai Institute of Microsystem and Information Technology of Chinese Academy of Science Shanghai 200050 China |
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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.
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Received: 23 May 2013
Published: 22 May 2014
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[1] Low Z N, Chinga R A, Tseng R, et al, Design and test of a high-power high-efficiency loosely coupled planar wireless power transfer system[J]. IEEE Trans. Ind. Electron., May 2009, 56(5): 1801-1812.
[2] Casanova J J, Low Z N, Lin J. A loosely coupled planar wireless power system for multiple receiver[J]. IEEE Trans. Ind. Electron., 2009, 56(8): 3060-3068.
[3] Sallan J, Villa J L, Liombart A, et al Optimal design of ICPT systems applied to electric vehicle battery charge[J]. IEEE Trans. Ind. Electron., 2009, 56(6): 3060-3068.
[4] Kurs A, Karalis A, Moffatt R, et al. Wireless power transfer via strongly coupled magnetic resonances[J]. Science, 2007, 317(5834): 83-86.
[5] Zhu C, Liu K, Yu C, et al. Simulation and experimental analysis on wireless energy transfer based on magnetic resonances[C]. Vehicle Power Propulsion Conf., Harbin, China, 2008: 1-4.
[6] Chen C J, Chu T H, Lin C L, et al. A study of loosely coupled coils for wireless power transfer[J]. IEEE Trans. Circuits Syst. II, Exp. Briefs, 2010, 57(7): 536-540.
[7] Karalis A, Joannopoulos J D, Soljacic M. Efficient wireless non-radiative mid-range energy transfer[C]. Ann. Phys., 2008, 323(1): 34-48.
[8] Harris S E. Electromagnetically induced transpa- rency[J]. Phys. Today, 1997, 50(7): 36-42.
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2013, Vol. 28 
