减小变速变桨型风电机组载荷的控制策略研究

The Research on the Control Strategy for Reducing the Loads on the Wind Turbines with Variable Speed and Pitch

在分析传统PID控制策略的基础上,提出了兆瓦级变速变桨型风电机组减载控制策略,考虑变增益和加滤波器控制,并基于风电机组专用软件BLADED的外接口,自主研发外部控制器,分析减载控制策略对整机性能、载荷的影响。结果证明,采用这种控制策略能有效地减小风轮上的载荷,使风电机组的运行更加平稳。

This paper presents a new control strategy for the MW wind turbines with variable speed and pitch on the basis of the traditional PID control method.Also,based on the external links of special software BLADED,the controller is developed independently by the authors.By using the method of reducing the loads,the effects on the aerodynamic performance and loads of wind turbines can be obtained.The results indicate the control strategy can effectively reduce the loads on wind turbines,so that the wind turbines will have a smooth operation.This simulation means can be applied to optimize the design and control of stalled wind turbines.