中国电力 ›› 2015, Vol. 48 ›› Issue (6): 14-19.DOI: 10.11930.2015.6.14

• 风光储专栏 • 上一篇    下一篇

风力机独立桨距角鲁棒自适应跟踪控制

崔双喜,王维庆   

  1. 新疆大学电气工程学院,新疆 乌鲁木齐 830047
  • 收稿日期:2015-03-28 出版日期:2015-06-25 发布日期:2015-11-26
  • 作者简介:崔双喜(1970—),男,甘肃武威人,博士研究生,研究方向为风力发电系统建模、控制及仿真。E-mail: ysucsx@126.com
  • 基金资助:
    This work is supported by Natural Science Foundation Project of Xinjiang Uygur Autonomous Region (No.2014211A007).

Robust Adaptive Tracking Control of Individual Pitch for Wind Turbines

CUI Shuangxi, WANG Weiqing   

  1. College of Electrical Engineering, Xinjiang University, Urumqi 830047, China
  • Received:2015-03-28 Online:2015-06-25 Published:2015-11-26
  • Contact: 新疆维吾尔自治区自然科学基金项目资助(2014211A007)

摘要: 针对风力机非线性电动桨叶系统,分析了桨叶承受的力矩和空气动力造成的不平衡载荷。根据动量矩定理,建立了具有时变不确定项的桨叶动力学模型。设计了风力机独立桨距角鲁棒自适应跟踪控制器,给出了控制器自适应参数的自适应更新率算法。利用李雅普诺夫稳定性理论,证明了桨叶控制系统的稳定性。采用Matlab/Simulink软件建立风力机桨叶动力学模型,仿真验证了控制策略的有效性和可行性。结果表明,在勿需知道桨叶系统时变不确定参数和不平衡载荷的情况下,所设计的控制器能够快速实现独立桨距角跟踪控制,控制器对复杂非线性桨叶模型表现出良好鲁棒控制效果。

关键词: 风力机, 动力学, 独立变桨距, 自适应, 李雅普诺夫稳定性

Abstract: The torques acting on the blades and the aerodynamic-caused unbalanced loads are analyzed for nonlinear motor-driven blade system. Based on the angular momentum theorem, a dynamic model is established for the uncertain time-variable system. A robust adaptive tracking controller of individual pitch is designed for wind turbine, and the adaptive algorithm of undated parameters is introduced. The stability of the blade control system is proved by using Lyapunov stability theory. In order to verify the effectiveness of the control strategy, a wind turbine blade dynamics simulation model is built by using Matlab/Simulink software. The simulation results show that the designed controller can quickly and accurately achieve the individual pitch angle tracking control task under the condition of uncertain time-variable system parameters and the impact of unbalanced loads. The controller is proved to have good and robust control effect for complex nonlinear blade model.

Key words: wind turbine, dynamics, individual variable pitch, adaptive, Lyapunov stability

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