Wind-Induced Response Analysis of Wind Turbine System

In this paper, the dynamic response of wind turbine system under wind action is numerically investigated. First, the random Fourier spectrum and rotating Fourier spectrum are proposed in this paper. These dynamic excitation models are built by starting with the point of view of random function and combining the understanding of the physical mechanism of the random excitations. Then a wind-induced analysis of 1.25 MW wind turbine system is carried out. The wind force records on the wind turbine tower and blades come from the random Fourier spectrum and rotating Fourier spectrum respectively. The results show that the wind-induced response of wind turbine system is remarkable and usually is the dominant factor in the design of wind turbine system.