基于三维风模型的风力机叶片载荷计算和偏移分析

摘要

研究了风剪切、塔影效应和湍流影响下的叶片有效风速模型和气动载荷的计算方法.并以额定功率为2 MW水平轴三叶片风力机为例,应用Bladed软件,分别在考虑风剪切、塔影效应和考虑风剪切、塔影效应、风湍流2种情况下,对叶素挥舞方向(即垂直于风轮平面的方向)的风速分量、摆振方向(即平行于风轮平面的方向)的风速分量,相对风速,摆振载荷和挥舞载荷,以及叶尖在摆振和挥舞方向的偏移进行计算和仿真分析.%This paper studied the effective wind speed models and the aerodynamic load calculation method considering the impact of wind shear,tower shadow and turbulence. Based on Bladed software, established 2 MW three - blade horizontal axis wind turbine model, and as an example, calculated and analyze the wind speed components on edgewise (the direction of parallel to the wind wheel plane) direction and flapwise (the direction of perpendicular to the wind wheel plane) direction, the relative wind speed, edgewise load and flapwise load,the deflection of blade on edgewise direction and flapwise direction.