Wind Field Simulation of Wind Turbine Systems

Abstract:

In order to determine exact wind loads of the blades and the tower,wind field simulation of wind turbine systems is investigated.Based on the random function description of stochastic processes,the crossrotational Fourier spectrum based on the physical mechanism is proposed to consider the rotating effect and the correlation of two different wind velocities on the blades.Then,wind velocities on blades (or the tower) are generated through the inverse Fourier transformation of the rotational Fourier spectrum (or the random Fourier spectrum).Finally,an example involving simulation of longitudinal turbulent wind field of a 1.25MW wind turbine system is investigated.The result shows that the proposed algorithm is of high accuracy.