风电机组塔架涡激振动问题会造成塔架的疲劳损伤，甚至导致机组的倒塌。以某5.0 MW风电机组为例，采用模态谱法对单塔架、塔架与机舱、整机（塔架、机舱、叶轮）三种工况下的涡激振动进行仿真分析，研究结构阻尼比及湍流强度对涡激振动的影响。结果表明：结构阻尼比为0.002 5时，单塔架工况下发生一阶涡激振动的起振风速较小，为4 m/s，风速为14 m/s时最大振幅达到了4.7 m，而塔架与机舱工况和整机工况的一阶、二阶最大振幅均小于0.2 m。在此基础上，提出一种整机工况下涡激振动抑制方法，使叶片攻角总体提升，可有效改善气动负阻尼现象，叶片载荷降低超过40%，机舱前后振动加速度最大值减小到75.7%，振动抑制效果显著。

The vortex-induced vibration may cause fatigue damage to the wind turbine tower and even lead to the collapse of the unit. In this paper, based on the modal spectrum method, a 5.0 MW wind turbine is taken as an example to simulate and analyze the vortex-induced vibration under three working conditions: single tower, tower and nacelle, and complete machine (tower, nacelle, impeller). The influence of structural damping ratio and turbulence intensity on vortex-induced vibration is analyzed. The results show that when the structural damping ratio is 0.002 5, the velocity of the first-order vortex-induced vibration is small (4 m/s), and the maximum amplitude is 4.7 m at 14 m/s, while the first and second order maximum amplitudes of the tower and nacelle condition and the complete machine condition are all less than 0.2 m. Then, a vortex-induced vibration abatement method is proposed for the complete machine condition. The blade's angle of attack can be increased to avoid the aerodynamic negative damping phenomenon effectively. The blade load is reduced by more than 40%, and the maximum nacelle vibration acceleration is reduced to 75.7%. In general, the vibration abatement effect is significant.