刘昌建,董锋斌,赵永玮

• 1:陕西理工大学电气工程学院

摘要(Abstract)：

为提高双馈风力发电机DFIG(doubly-fed induction generator)的运行性能，提出一种扩张状态观测器与二阶滑模控制相结合的DFIG直接功率控制策略。首先，分析了以有功、无功功率为状态变量的DFIG数学模型。然后，引入扩张状态观测器，对系统状态变量与包含大量耦合项以及辅助激励变量项等因素在内的集总不确定项进行估计。最后，设计基于super-twisting算法的二阶滑模控制方法，并运用Lyapunov第二法证明了其稳定性。通过Matlab/Simulink仿真并与二阶滑模控制进行对比验证，结果表明，该控制策略能削弱功率和电磁转矩的抖振，增强了系统鲁棒性。

关键词(KeyWords)： 双馈风力发电机;直接功率控制;扩张状态观测器;二阶滑模;运行性能

Abstract:

Keywords:

基金项目(Foundation): 陕西省教育厅科研项目（15JK1120）

作者(Author): 刘昌建,董锋斌,赵永玮

DOI: 10.19635/j.cnki.csu-epsa.000981

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