Research on Effects of Turbulence Intensity Distribution to Fatigue Loads of Wind Turbines
Turbulence intensity is one of the main design parameters of wind turbines,which has a direct impact on the design load of wind turbines.Combined with the fourth edition of IEC 61400-1,the calculation methods of turbulence intensity and its distribution parameters are introduced,and the influence of turbulence intensity on fatigue load is analyzed.According to the equal probability distribution,the equivalent fatigue loads corresponding to different interval numbers are simulated and compared.The calculation results show that the calculation method of turbulence intensity distribution can significantly reduce the design fatigue load of the unit.Combined with the calculation results of spindle fatigue,the effectiveness of this method is proved.