感应电能传输系统分段供电的双自由度鲁棒控制

doi:10.19595/j.cnki.1000-6753.tces.170306

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Abstract The load-side pickup power of inductive power transfer (IPT) system is often influenced by the uneven distribution of magnetic field intensity between the segmented primary coils, particularly in the setting of segmented IPT systems, which will affect system stability and performance. This paper focuses on the output stabilization problem of a simplified two-coil segmented IPT system which is powered by parallel-connected LCL resonant circuits. A double-degree of freedom (DOF) robust control technique is therefore introduced for constant voltage output. Firstly, according to the perturbation law of mutual inductance around segmentation transitions, the parameter uncertainty model is established via the generalized state-space averaging (GSSA) method. After that, an H_∞ controller is obtained by adjusting the gain of output weighting function based on the generalized mixed sensitivity, thus the fast performance to restrain the effect of mutual inductance perturbation is achieved. For further correction of the reference input, the derivation and design of a pre-filter is introduced afterwards. The experimental result shows double-DOF control can attenuate the effect of mutual inductance perturbation during segmentation transition and improve the tracking response performance of reference input significantly.

Key words： Inductive power transfer mutual inductance uncertainty generalized state-space averaging robust control double-degree of freedom

Published: 10 October 2017

PACS:

TM724

Fund:国家重点研发计划轨道交通专项课题（2017YFB1201002）,国家自然科学基金（51507147）和国家杰出青年科学基金（51525702）资助项目

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	Li Yanling
	Yang Mingkai
	Du Hao

Cite this article:

Li Yanling,Yang Mingkai,Du Hao. Double-Degree of Freedom Robust Control for Segmented Inductive Power Transfer System[J]. Transactions of China Electrotechnical Society, 2017, 32(18): 62-72.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.170306 OR https://dgjsxb.ces-transaction.com/EN/Y2017/V32/I18/62

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