磁耦合谐振式无线电能传输方向性分析与验证

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Abstract In order to confirm whether the angle deflection will influence the power of receiver coils in wireless power transfer system, the characteristic of orientation in wireless power transfer system is analyzed by the coupling model of two spatial isolated coils and its equivalent circuit firstly, and then yielded the frequency response curve of normalized voltage in the receiver coils and necessary condition for wireless power transfer. Characteristic of orientation in the case of overcoupling, critical coupling and undercoupling was presented after the effect to coupling factor is analyzed by orientation deflection according to the relationship between the coupling coefficient of two spatial isolated coils and orientation. In the end, experiment circuit is designed and experimental results are well consistent with the theoretical analysis, which shows the correctness of the proposed method and its result. Thus provides an useful reference for the design of wireless power transfer system for mobile device and its parameters optimization.

Key words： Wireless power transfer coupled magnetic resonances coupled factor characteristic of orientation

Received: 03 December 2012 Published: 18 June 2014

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TM72

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	Li Yang
	Yang Qingxin
	Yan Zhuo
	Zhang Chao
	Chen Haiyan
	Zhang Xian

Cite this article:

Li Yang,Yang Qingxin,Yan Zhuo等. Analysis and Validation on Characteristic of Orientation in Wireless Power Transfer System via Coupled Magnetic Resonances[J]. Transactions of China Electrotechnical Society, 2014, 29(2): 197-203.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I2/197

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