Assessment of fatigue load alleviation potential through blade trailing edge morphing

The Science of Making Torque from Wind

Tsiantas, Theofanis^1 ; Manolas, Dimitris I.^1 ; Machairas, Theodore^2 ; Karakalas, Anargyros^2 ; Riziotis, Vasilis A.^1 ; Saravanos, Dimitrios^2 ; Voutsinas, Spyros G.^1

School of Mechanical Engineering, National Technical University of Athens, Athens

GR15780, Greece^1

Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece^2

关键词: Aeroelastic control;    Fatigue load reduction;    Individual pitch;    Load reduction;    Shape deformation;    Trailing edge flaps;    Wind turbine loads;    Wind velocities;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/753/4/042020/pdf
DOI  :  10.1088/1742-6596/753/4/042020

来源: IOP

【 摘 要 】

The possibility of alleviating wind turbine loads through blade trailing edge shape morphing is investigated in the present paper. Emphasis is put on analyzing the effect of the trailing edge flap geometry on load reduction levels. The choice of the shape deformation of the camber line as well as the chordwise and spanwise dimensions of the trailing edge flap are addressed. The analysis concerns the conceptual DTU 10 MW RWT. Aeroelastic control of loads is materialized through a standard individual flap controller. Furthermore, a comb ined individual pitch-flap controller is evaluated and found to present advantages compared to the flap only controller. Flapwise fatigue load reduction ranging from 10% to 20%, depending on wind velocity and configuration considered, is obtained. Better performance is achieved by the combined pitch-flap controller.