风力发电机液压变桨距控制系统的研究

Research of Wind Turbine Hydraulic Pitch Control System

根据空气动力学知识,组建由风速模型、风轮模型、传动链模型等组成的变桨距风力发电机组仿真模型。重点对液压变桨距控制的过程进行研究,在Matlab/Simulink环境下建立液压变桨距控制系统模型,对收桨和开桨过程进行建模仿真并对结果进行分析。在液压变桨距控制系统中引入PID控制器进行校正,通过仿真分析验证系统设计的可行性以及仿真模型的合理性,以使液压变桨距控制系统可达到准确快速地控制桨距角的目的。

According to the dynamic knowledge of air,the model of propeller-change wind power generators is built,including wind speed model,rotor model,transmission chain model and so on.And the control strategy of variable pitch wind turbine is derived.This paper focuses on the process of hydraulic pitch control,modeling of the hydraulic pitch control system,modeling of oar closing-opening process in the Simulink environment and analyzes the simulation result.In addition,the system is added by a PID controller for calibration.And the pitch control system is simulated &analyzed in Matlab/Simulink environment.