线圈非同轴时磁耦合谐振式无线电能传输系统的效率优化

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Abstract Transmission efficiency will be reduced when transmission and receiving coils are aligned non-coaxially in the wireless power transfer system (WPT) via coupled magnetic resonances. The expression for the efficiency of the WPT system was derived by coupled-model theory (CMT). The variation rule of the transmission efficiency was analyzed according to this expression. In this paper, the method of adjusting parameters based on chaos optimization algorithm was proposed. Then key parameters of the WPT system can be matched. It is shown the efficiency can be improved by the proposed method. A wireless power transmission system via magnetic resonance coupling was designed. Simulation and experimental results have verified the theory.

Key words： Wireless power transfer, parameters matching, maximum efficiency, coupled-mode theory

Received: 05 May 2015 Published: 02 May 2017

PACS:

TM724

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	Articles by authors
	Li Zhongqi
	Huang Shoudao
	Yuan Xiaofang

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Li Zhongqi,Huang Shoudao,Yuan Xiaofang. Optimum Efficiency Analysis of Wireless Power Transfer System via Coupled Magnetic Resonances with Lateral and Angular Misalignments[J]. Transactions of China Electrotechnical Society, 2017, 32(8): 151-159.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I8/151

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