First the paper compares experimentally obtained values in the literature to those obtained from the time history analysis by the finite element method using ANSYS computer program for a 65 kW wind turbine when the turbine is subjected to the Landers earthquake. It is shown that the experimental and numerical values compare well at the damping ratio of 0.86 establishing the validity of the numerical method. The effect of wind turbine sizes (65 kW, 1 MW, 2 MW, and 5 MW turbines), damping ratios, base acceleration directions, and different earthquakes (Landers, Imperial Valley, and Northridge) on the wind turbine responses are studied. The responses studied are the peak accelerations and deformations on the top of the nacelle, and the maximum von Mises stresses at the base of the wind turbine towers.
展开▼
