Abstract
An elastic system with the composite material is proposed to achieve the passive control of the pitch angle of the rotor blade for Horizontal-Axis-Wind-Turbine (HAWT). Through the wind tunnel test with real scale model, we verify the aerodynamic properties of the turbine blade and predict the electric power generation of our paasive control system. We also estimate the influence of fatigue of elastic composite materials in the electric power generation. As a result of the present study, the effectiveness of this system was confirmed. Eeven if the elastic material fatigues due to the periodic external forces, the performance of electric power generation of the turbine with present system is maintained by adjusting the initial pitching angle at the root of the blade.
