电容耦合型动态电压恢复器参数建模与控制

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Abstract In order to make an appropriate choice for the main components of capacitor-coupled dynamic voltage restorer (DVR), the models of the switching device, the coupling capacitor and the filter inductor of the voltage source converter were put forward. Herein, the equivalent circuit and phasor diagrams were used, and the working principle of DVR was analyzed according to that the output current of voltage source converter is minimum. At the same time, a kind of DVR in-phase compensation control structure was also studied, regarding the compensating voltage as the inner loop and the load voltage as the outer loop. Finally, the circuit simulation and experimental results show that DVR under the proposed control strategy has higher static compensation precision and faster dynamic response.

Key words： Dynamic voltage restorer voltage sag parameter selection control strategy

Received: 03 November 2014 Published: 01 April 2016

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TM46

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	Zhang Xinwen
	Tong Xiangqian

Cite this article:

Zhang Xinwen,Tong Xiangqian. Parameter Modeling and Control of Capacitor-Coupled Dynamic Voltage Restorer[J]. Transactions of China Electrotechnical Society, 2016, 31(6): 212-218.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I6/212

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