电力系统保护与控制2012，Vol.40Issue(1)：5-11,7.
基于滑动模态控制的双馈风电机组低电压穿越控制策略的研究
Research on low voltage ride through control strategies for doubly fed induction generator based on sliding mode control
摘要
Abstract
Based on the analysis of dynamic mathematical models of the doubly fed induction generators, a novel low voltage ride through (LVRT) control strategy is designed by using sliding mode control (SMC). This method divides the system movement process into two phases of approaching phase and sliding phase by choosing sliding surface. Then combining Function Lyapunov and stability theory, it designs control strategies of every phase respectively and combines them to form the final 5-order LVRT control strategy. Finally, by ignoring stator magnetic flux it designs the simplified 3-order control strategy. The simulation experiment is performed by using the modified WSCC-9 nodes system. The results show that the novel control strategy is better than traditional vector control strategy, strengthening the LVRT capability of wind turbine generators. Moreover, this strategy also improves voltage level at the point of common coupling (PCC) of wind turbine, being beneficial to the whole system recovery after faults.关键词
风力发电/双馈式异步发电机/滑动模态控制/低电压穿越/控制策略Key words
wind power generation/doubly fed induction generator/sliding mode control/low voltage ride through/control strategy分类
信息技术与安全科学引用本文复制引用
李国庆,钱叶牛,刘旻序..基于滑动模态控制的双馈风电机组低电压穿越控制策略的研究[J].电力系统保护与控制,2012,40(1):5-11,7.基金项目
国家电网公司科技项目 （）
