基于模糊控制的风力发电机组偏航系统研究

摘要

针对近年来风电机组大型化对偏航系统稳定性提出的高要求,提出将模糊控制应用于偏航控制系统中.分析了偏航控制系统的工作原理；对偏航系统设计了模糊控制器,并对其控制过程设计了软件流程图；在Matlab/Simulink仿真平台中搭建了该系统的仿真模型,进行了仿真实验,并与传统PID控制方法的控制效果进行了比较分析.结果表明,模糊控制系统能同时满足偏航系统对控制精度和稳定性的要求,其整体性能优于PID控制系统.%With consideration for the high standards for the stability of the yaw system as needed for the large scale of wind turbines these years, this paper applies the fuzzy control theory to the yaw system. Firstly, the working principle of the yaw system is analyzed. Secondly, a fuzzy controller is designed and the corresponding software flowcharts are compiled towards the control process. At last, the simulation model of the system is set up in the platform of Matlab/Simulink, and then a simulation experiment is conducted. The control effect between fuzzy control strategy and PID control method is compared and analyzed. The result shows that the fuzzy controller has better overall performance and it can satisfy the requirements of both control accuracy and stability.