Parameter Modeling and Control of Capacitor-Coupled Dynamic Voltage Restorer
Zhang Xinwen1,2, Tong Xiangqian1
1. School of Automation and Information Engineering Xi’an University of Technology Xi’an 710048 China; 2. School of Information Engineering Beifang University of Nationalities Yinchuan 750021 China
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.
张新闻, 同向前. 电容耦合型动态电压恢复器参数建模与控制[J]. 电工技术学报, 2016, 31(6): 212-218.
Zhang Xinwen, Tong Xiangqian. Parameter Modeling and Control of Capacitor-Coupled Dynamic Voltage Restorer. Transactions of China Electrotechnical Society, 2016, 31(6): 212-218.
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2016, Vol. 31 
