风力发电机桨叶轴承载荷分析模型的研究  

Research on the Model of Blade Bearing Loads of the Wind Turbine

作　　者：张锁怀[1] 郭军[2] 

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

出　　处：《机械设计与研究》2009年第4期116-119,共4页Machine Design And Research

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,研究了桨叶轴承在攻角、桨距角、偏航角速度及不同风速工况下所承受的载荷。分析结果表明,攻角增加会使不同方向上的载荷有不同程度的增加;桨距角增大到一定程度,载荷会呈现不同的趋势;偏航速度的变化导致陀螺力矩的变化,从而引起轴承载荷的变化。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 angle of attack, the pitch angle of blade, yawing speed and the wind speed in different conditions on blade bearing loads. The results show that the loads increase with the angle of attack increasing in different directions in varying degrees, the loads would be different with pitch angle increasing when the pitch angle is greater than some angle, and because the gyroscopic torque is changed by yawing speed, the loads of bearing are changed.

关 键 词：桨叶轴承 攻角 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] TH128[机械工程—机械设计及理论]