分段模糊变桨距控制系统的设计与仿真  

DESIGN AND ANALYSIS OF DYNAMIC FUZZY VARIABLE PITCH CONTROL SYSTEM

作　　者：姚兴佳[1] 张雅楠[1] 郭庆鼎[1] 井艳军[1] 

机构地区：[1]沈阳工业大学风能技术研究所,沈阳110023

出　　处：《太阳能学报》2011年第9期1288-1293,共6页Acta Energiae Solaris Sinica

基　　金：国家科技支撑计划(2006BAA01A03);辽宁省教育厅重点实验室项目(20060595)

摘　　要：针对传统PID控制器应用的局限性,风电机组自身特性以及模糊控制的非线性行为和独立于系统模型的特点,提出了分段模糊变桨距控制系统。在大误差范围内,运用二维模糊控制器来提高系统的响应速度。小误差范围内,切入以表达式形式给出模糊规则的三维模糊变桨距控制器,以提高系统的控制精度。Simulink仿真结果表明,分段模糊变桨距控制系统表现出很好的控制品质,具有良好的鲁棒性。An increasing number of large wind turbines are being developed with a variable speed vanable pitch control mechanism, for its good adjusting mode and flexible control. Owing to the stochastic nature of wind speed, the nonlinearities of wind turbine, the time variable of parameters and the strong coupling of system generate system output power with fluctuation. Allowing for the limitations of PID controller, the characteristics of wind turbines and fuzzy controller having the nonlinear behavior and independent from system mode, dynamic fuzzy variable pitch control system was proposed in this paper. Two dimensional fuzzy controller was used to improve response speed in the larger range of error. While the three dimensional fuzzy controller being employed in smaller range of error to improve the control quality of system, the rules of three dimensional fuzzy controller were given by expression for- mula. Simulation results showed that dynamic fuzzy variable pitch control system dramatically improves control quality and has more excellent robustness than PID variable pitch control system.

关 键 词：变桨距 风电机组 PID控制器 模糊控制器 

分 类 号：TM614[电气工程—电力系统及自动化]