Abstract：An improved control strategy of grid-side converter(GSC) is presented based on sliding-mode control in two phase static coordinate. The method uses double-loop structure, direct power control based on sliding-mode control(SMC-DPC) is used in the inner-loop, and in the outer-loop a sliding mode controller was designed to improve the DC-link voltage stability. Grid-side converter models were analyzed under unbalanced grid voltage conditions. It is proved that the control objectives can be realized without changing the existing control structure under unbalanced grid voltage conditions. The controller has advantages of simple structure, high control precision, rapid response speed and strong robustness. Simulation and experiment results confirm the reliability and validity of the control strategy under unbalanced grid voltage conditions.
张迪, 魏艳君, 马利轩, 张金龙, 丁浩, 漆汉宏. 不平衡电网电压下基于滑模变结构控制馈风电系统网侧变流器控制策略[J]. 电工技术学报, 2015, 30(10): 266-275.
Zhang Di, Wei Yanjun, Ma Lixuan, Zhang Jinlong, Ding Hao, Qi Hanhong. Sliding-Mode Control for Grid-Side Converters of DFIG-Based Wind- Power Generation System Under Unbalanced Grid Voltage Conditions. Transactions of China Electrotechnical Society, 2015, 30(10): 266-275.
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2015, Vol. 30 
