Articles | Volume 1, issue 2
Wind Energ. Sci., 1, 205–220, 2016
Wind Energ. Sci., 1, 205–220, 2016
Research article
26 Oct 2016
Research article | 26 Oct 2016

Wind tunnel tests with combined pitch and free-floating flap control: data-driven iterative feedforward controller tuning

Sachin T. Navalkar et al.

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Cited articles

Andersen, P. B., Gaunaa, M., Bak, C., and Buhl, T.: Load alleviation on wind turbine blades using variable aerofoil geometry, Proc. of the EWEC, Brussels, Belgium, 2006.
Bak, C.: Description of the DTU 10 MW reference turbine, DTU Wind Energy, Tech. Rep., I-0092, 2013.
Barlas, T. K. and Van Kuik, G. A. M.: Review of the state of the art in smart rotor control research for wind turbines, Prog. Aerosp. Sci., 46, 1–27, 2010.
Bernhammer, L. O., Van Kuik, G. A. M., and De Breuker, R.: How far is smart rotor research and what steps need to be taken to build a full-scale prototype?, J. Phys. Conf. Ser., 555, 012008,, 2012.
Short summary
In order to reduce the cost of wind energy, it is necessary to reduce the loads that wind turbines withstand over their lifetime. The combination of blade rotation with newly designed blade shape changing actuators is demonstrated experimentally. While load reduction is achieved, the additional flexibility implies that careful control design is needed to avoid instability.