风电机组柔性叶片在刚柔耦合作用下的非线性振动研究

Study on nonlinear vibration of wind turbine flexible blade under rigid flexible coupling

文章考虑了叶片的刚柔耦合作用,利用仿真技术对某5 MW风电机组柔性叶片进行了非线性振动特性分析,揭示风力机叶片振动时的相互耦合规律。以风电机组刚柔耦合动力学效应为基础,对风电机组在多载荷耦合作用下,结合柔性叶片变形基本原理,探索风电机组刚柔耦合系统动力学参数变化规律。结果表明,叶尖出现位移的偏移量为17 mm,叶根的偏移量较小,保持与轮毂的刚性连接,该结论为风电机组的状态监测与稳定运行提供了参考。

Considering the rigid flexible coupling,the nonlinear vibration characteristics of the flexible blade of 5 MW wind turbine are analyzed by using simulation technology,and the coupling law of the blade vibration is revealed.Based on the rigid flexible coupling dynamic effect of wind turbine,this paper explores the dynamic parameter change law of rigid flexible coupling system of wind turbine under the multi load coupling and combined with the basic principle of flexible blade deformation.The results show that the displacement of blade tip is 17 mm,and the displacement of blade root is small,which keeps the rigid connection with hub,so as to provide reference value for the condition monitoring and stability of wind turbine.