基于振动理论的MCR-WPT系统频率分裂特性研究

doi:10.19595/j.cnki.1000-6753.tces.170586

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Abstract In order to further reveal the physical interpretation of frequency splitting for magnetic coupling resonant wireless power transfer (MCR-WPT) systems, and to provide a systematic operating principle for MCR-WPT systems operating at the maximum power transfer state, a novel modeling and analyzing method is proposed in this paper. According to the Kirchhoff’s voltage law (KVL), the time-domain model of MCR-WPT system is derived. Then the analytical expression of transfer power is obtained by using matrix calculation. Further, based on vibration theory, the frequency splitting phenomenon of transfer power has been deeply analyzed and several key system parameters, including system natural frequency, circuit natural frequency and resonant frequency, have been elucidated and derived. Meanwhile, the relationship between system natural frequency and circuit natural frequency has also been deeply analyzed, based on which the physical interpretation of frequency splitting and resonance has been revealed. Finally, a prototype has been built and tested to validate the theoretical results.

Key words： Magnetic coupling resonant wireless power transfer vibration theory frequency splitting resonance

Received: 08 May 2017 Published: 12 July 2018

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TM724

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	Sun Yue
	Liao Zhijuan
	Ye Zhaohong
	Tang Chunsen
	Wang Peiyue

Cite this article:

Sun Yue,Liao Zhijuan,Ye Zhaohong等. Research on Frequency Splitting Characteristic of MCR-WPT Systems Based on Vibration Theory[J]. Transactions of China Electrotechnical Society, 2018, 33(13): 3140-3148.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.170586 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I13/3140

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