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Robust Fuzzy Control for Doubly Fed Wind Power Systems with Variable Speed Based on Variable Structure Control Technique

机译：基于变结构控制技术的双馈风力发电系统的鲁棒模糊控制。

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摘要

The design of a variable structure sliding-mode controller (SMC) for a variable speed wind turbine with double-fed induction-generator, based on the fuzzy logic, is described in this paper. The purpose of this controller is to maximize the energy capture by operating the turbine at the optimal rotational speed as well as fast and stable generator response. The dynamics of both the turbine and the generator are modeled to exhibit their mechanical/electrical characteristics. Two global sliding-mode controllers, which eliminate the reaching phase of SMC and the sliding-mode motion starts from the beginning, are designed to guarantee the robust tracking of both the optimal blade-rotor speed and the reference generator torque/flux in the whole process, despite the parametric uncertainty and external disturbance. To reduce the adverse chattering effect of the conventional SMC, the adaptive fuzzy inference strategy is adopted to deduce the adjustable switch gain, instead of the fixed gains. Simulation results show that the proposed controller achieves global asymptotic tracking, satisfied torque/flux responses, and has better performance and higher utilization ratio of wind energy than the conventional feedback-linearization method.
机译：本文介绍了一种基于模糊逻辑的双馈感应式风力发电机变速结构滑模控制器的设计。该控制器的目的是通过使涡轮机以最佳转速以及快速，稳定的发电机响应运行来最大程度地捕获能量。涡轮和发电机的动力学都经过建模以显示其机械/电气特性。设计了两个全局滑模控制器，它们消除了SMC的到达阶段，并且从一开始就开始进行滑模运动，以确保对最佳叶片-转子速度和整个参考发电机转矩/通量进行鲁棒性跟踪尽管存在参数不确定性和外部干扰，但仍然存在一些过程。为了减少传统SMC的不利抖振效应，采用自适应模糊推理策略来推导可调开关增益，而不是固定增益。仿真结果表明，与传统的反馈线性化方法相比，该控制器实现了全局渐近跟踪，具有满意的转矩/磁通响应，具有更好的性能和更高的风能利用率。

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  • 来源
    《Mathematical Problems in Engineering》 |2014年第21期|750101.1-750101.13|共13页
  • 作者

    Zhang Xizheng; Wang Yaonan;

  • 作者单位

    Hunan Inst Engn, CIC Wind Power Equipment & Energy Convers, Xiangtan 411104, Peoples R China.;

    Hunan Univ, Sch Elect & Informat Engn, Changsha 410082, Hunan, Peoples R China.;

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