变桨和偏航运动对风力发电机桨叶轴承载荷的影响  

Research on the Influence of Loads of Variable Propeller and Yaw of Blade Bearing of the Wind Turbine

作　　者：郭军[1] 张锁怀[2] 

机构地区：[1]陕西科技大学机电工程学院,陕西西安710021 [2]上海应用技术学院机械与自动化工程学院,上海200235

出　　处：《机械与电子》2009年第10期56-60,共5页Machinery & Electronics

基　　金：上海市重点科技攻关资助项目(071105116)

摘　　要：在考虑攻角、桨距角、偏航运动、重力和惯性力等因素的情况下,基于静力学分析方法,建立了桨叶轴承系统载荷分析数学模型。通过数值计算,研究了桨叶轴承在风速和桨距角、偏航角速度和桨叶转速同时发生变化的工况下所承受的载荷。分析结果表明,风速的增大会使载荷不断增加,而桨距角的增大只能使载荷在局部有所增大;桨叶轴承系统的陀螺力矩幅值大小、桨叶在空间的旋转角度以及偏航速度有着直接的关系。In the case of the consideration of angle of attack, propeller pitch angle, yawing rotation,gravity and moment of inertia,a mathematical model based on static analysis is put forward, which is used to study loads of the blade bearing system of a wind turbine. Numerical calculation is used to research the influence of the pitch angle of blade and wind speed; the yawing angle speed and rotation speed in different conditions on blade bearing loads. The results show that the load will increased with wind speed increasing, but load can only be increased at partial as the pitch angle increasing there is a direct relationship between gyro torque amplitude and blade rotation degree in space as well as the yaw speed.

关 键 词：桨叶轴承 桨距角 偏航运动 载荷 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程] TH132.41[机械工程—机械制造及自动化]