基于LCL-S拓扑的感应电能传输系统的建模与控制方法

doi:10.19595/j.cnki.1000-6753.tces.160914

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Abstract This paper analyzes the dynamics of an LCL-S based inductive power transfer (IPT) system, and aims to improve its reference tracking performance by using a digital PI controller. Firstly, The large-signal model of the IPT system and the steady-state operating point are derived with the help of the generalized state-space averaging (GSSA) technique. Based on the previous work, the small-signal model is established to describe how the load voltage will react to a perturbation in its input. Comparing the step response of the small-signal model with the output of the experimental setup, the small-signal model is nearly identical to the system dynamics. In other words, the proposed small-signal model can describe the prototype well. Then, the Matalab’s PIDtool design toolbox is used to generate suitable PI controller parameters for a fast response time in the load voltage according to the small-signal model. Finally, experiments prove that the closed-loop digital PI controller is designed to ensure a fast response time of approximately 12 ms in the load voltage step change.

Key words： LCL-S generalized state-space averaging small-signal model digital PI controller

Received: 15 June 2016 Published: 16 January 2018

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TM712

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	Lin Tianren
	Li Yong
	Mai Ruikun

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Lin Tianren,Li Yong,Mai Ruikun. Modeling and Control Method of Inductive Power Transfer System Based on LCL-S Topology[J]. Transactions of China Electrotechnical Society, 2018, 33(1): 104-111.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.160914 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I1/104

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