风力发电机自适应鲁棒保性能控制器设计

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振动与冲击 ›› 2013, Vol. 32 ›› Issue (15) : 95-99.

论文

风力发电机自适应鲁棒保性能控制器设计

吴忠强，谢建平

作者信息 +

WIND TURBINE ADAPTIVE GUARANTEED PERFORMANCE CONTROLLER DESIGN

Wu Zhongqiang，Xie Jianping

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文章历史 +

摘要

本文针对变速变桨距风力发电机系统对于风能利用率、动态稳定性要求高的特点，建立了风能转换系统的线性参数变化（LPV）模型，给出了设计一个具有自适应机制的鲁棒保性能控制器的充分条件，进而设计出了一种新的自适应鲁棒保性能控制器。首先，运用自适应方法估计出系统的不确定参数，然后利用参数估计和鲁棒保性能控制方法设计系统的状态反馈控制器，其反馈增益阵是通过求解一组线性矩阵不等式（LMI）的约束而得到，并且满足某二次型性能指标。仿真表明，无论在低风速下还是在高风速下，控制器不仅使系统具有良好的动态特性和鲁棒性，而且使系统具有抑制外界干扰能力。

Abstract

Based on the variable speed variable pitch wind generator for wind energy utilization and the dynamic stability of the high demand characteristics，a linear parameter varying(LPV) system model is established，a sufficient condition of the adaptive robust guaranteed cost controller is presented and a new adaptive guaranteed cost controller(AGCC) is proposed in this paper. First，the uncertain parameters of the system is estimated by using the adaptive method，then the estimated uncertain parameters and robust guaranteed cost control are used design state feedback gain，the feedback gain is obtained by a set of method of linear matrix in equality(LMI) constraints，and the controller can meet a quadratic performance evaluation．The simulation results show that，in terms of low or high wind speed，the controller has good robust interference su¬ppression．