基于最小电流比值的IPT系统频率跟踪的动态调谐方法

doi:10.19595/j.cnki.1000-6753.tces.161771

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Abstract In the inductive power transfer (IPT) system, either the mutual inductance or the self-inductance will drift as the airgap variation of the electromagnetic coupling mechanism with magnetic core between the primary coil and secondary coil. Then, the required capacity of the source will increase and the efficiency of the overall system will decrease because of the detuning state of IPT system. In order to overcome this detuning problem, a dynamic tuning method is proposed in this paper to track the resonance of IPT system. Through tracking the minimum current ratio of primary coil and DC source as well as adjusting the frequency of IPT system dynamically by the controller, the system performance can be improved accordingly. Finally, various experiments are conducted against different airgaps between the primary side and the secondary side by a prototype setup. The test results show that IPT system can return back to resonance with different airgaps by the proposed method. Moreover, the required capacity of the DC source is limited, and the efficiency of the overall system increases up to 1.64%.

Key words： Inductive power transfer (IPT) minimum current frequency tracking dynamic tuning

Received: 10 November 2016 Published: 28 March 2018

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TM724

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	Articles by authors
	Mai Ruikun
	Xu Danlu
	Yang Mingkai
	He Zhengyou

Cite this article:

Mai Ruikun,Xu Danlu,Yang Mingkai等. Dynamic Tuning Method of Frequency Tracking Based on the Minimum Current Ratio for IPT System[J]. Transactions of China Electrotechnical Society, 2018, 33(6): 1276-1284.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.161771 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I6/1276

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