变桨距风力机在全风速段内的桨距角控制策略仿真研究

Simulation Research on Pitch Control Strategies of Variable Pitch Wind Turbine Within the Whole Section of Wind Speed

分析了变桨距控制策略的基本原则,Simulink环境下搭建了1.5 MW的DFIG机组全风速段内桨距角控制模型,将传统模型与改进模型进行仿真对比。结果表明,传统模型与改进模型都能有效控制桨距角特性,且改进模型在最大风能追踪区,风速上升时,可以有效抑制桨距角波动,并控制功率稳定输出。

The basic principle of variable pitch control strategy was analyzed,the pitch angle control was modeled within the whole section of wind speed based on 1. 5 MW doubly-fed wind power generator in Simulink and the simulation results of improved model were compared with the traditional one. The simulation results showed that the pitch angle could be effectively controlled with the two models. Moreover,the improved model used in the maximum wind power tracking area,the fluctuation of pitch angle could be restrained when the wind speed rises,and power output was controlled stability.