基于扩张状态观测器估计补偿的Buck变换器带恒功率负载无源控制

doi:10.19595/j.cnki.1000-6753.tces.181274

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Abstract Passivity-based control method is used to overcome the problem that the stability of Buck converter with constant power load(CPL) can be reduced or even unstable in this paper. Considering the existence of parasitic resistance in the converter, the control performance of the controller will be reduced. In this paper, taking effects caused by the parasitic resistance of converter as unknown disturbance, the disturbance is observed by using of extended state observer, and real-time compensated by passivity-based controller. For the problem that the general nonlinear function in extend state observer (ESO) will appear unbounded, this paper improves it to make it easier to be used in practical engineering. The influence of passivity-based control parameters on the performance of the steady and dynamic of the system is analyzed by using zero-pole map and other tools. The correctness of the method proposed in this paper is proved by computer simulation.

Key words： Buck converter constant power load extend state observer unknown disturbance parasitic resistance observing and compensating

Received: 12 September 2018 Published: 29 July 2019

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TM46

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	Articles by authors
	Cui Jian
	Wang Jiuhe
	Li Jianguo
	Zhang Qiaojie

Cite this article:

Cui Jian,Wang Jiuhe,Li Jianguo等. Research on Passivity-Based Control of Buck Converter with Constant Power Load Based on Extend State Observer Estimating and Compensating[J]. Transactions of China Electrotechnical Society, 2019, 34(zk1): 171-180.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.181274 OR https://dgjsxb.ces-transaction.com/EN/Y2019/V34/Izk1/171

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