Abstract
For design of large wind turbines, effects of structural oscillation of turbine system have to be taken account into load analysis, since oscillation amplitude of blades and tower can be increased considerably for those turbines. The present study deals with a calculation model which can evaluate the aero-elastic effects on the rotor characteristics of horizontal axis wind turbine (HAWT). Using weakly coupled fluid-structure analysis model, effects of structural oscillation of turbine blades as well as the existence of the tower have been examined for the characteristics of the structural loads. The effects of inflow turbulence are also examined on the fatigue load on the turbine structure. The validity of the proposed model is examined by comparing the calculated results with measurement.
