Analysis of fatigue damage of tower of large scale horizontalaxis wind turbine by wind-induced transverse vibration

In order to realize the fatigue strength design for tower of the large- scale horizontal axis wind turbine (HAWT), the check method combining GL 2010 certification with German standard et al was proposed. The results of the dynamic natural characteristics of the tower based on finite element method and the software GH Bladed were compared. According to DIN 4133 standard, internal forces and additional moments from wind- induced transverse vibrations were obtained. The stress range of tower section was calculated by engineering algorithm. The expression of the fatigue damage caused by wind- induced transverse vibrations was induced. The fatigue damage values for different scenarios were calculated for a 2 MW wind turbine tower. The damage distribution along the height of the tower was analyzed. The work offers effective analysis method for the fatigue damage of tower of wind turbine by wind- induced transverse vibration.