基于<em>H</em><sub>∞</sub>回路成形的动态电压恢复器鲁棒控制

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Abstract Taking into account the high-frequency domain transformer noise, system model perturbation(typically in the high frequency domain), load disturbance and actuator saturation in the feedback system, system robustness requirement is needed for the dynamic voltage restorer(DVR). In this paper, loop shaping method is utilized in the standard feedback system to realize the robust design. Firstly, the pre- and post-compensation are selected to make the singular values of the nominal controlled system become the desired open-loop gain. Then the robust stabilization controller of the normalized coprime-type perturbed system is designed to be the final controller. When the controller is complex, the frequency-weighted Hankel norm approximation method is adopted to obtain a simple controller, which meets the robustness requirements. So the controller of DVR can achieve a compromise result between robust stability and system performance. Finally simulation results show that controller is effective and feasible.

Key words： Feedback system voltage dip loop shaping robustness

Received: 25 July 2011 Published: 20 March 2014

PACS:

TM712

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	Articles by authors
	Liu Niu
	Yao Gang
	Zhou Lidan
	Li Lixue
	Zheng Yihui
	Gao Rong
	Zhang Fu
	Han Yue

Cite this article:

Liu Niu,Yao Gang,Zhou Lidan等. H_∞Loop Shaping Based Robust Controller of Dynamic Voltage Restorer[J]. Transactions of China Electrotechnical Society, 2012, 27(9): 48-53.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I9/48

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