Articles | Volume 1, issue 2
Wind Energ. Sci., 1, 297–310, 2016
https://doi.org/10.5194/wes-1-297-2016
Wind Energ. Sci., 1, 297–310, 2016
https://doi.org/10.5194/wes-1-297-2016
Research article
01 Dec 2016
Research article | 01 Dec 2016

Articulated blade tip devices for load alleviation on wind turbines

Carlo L. Bottasso et al.

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Cited articles

Andersen, P. B., Henriksen, L., Gaunaa, M., Bak, C., and Buhl, T.: Deformable trailing edge flaps for modern megawatt wind turbine controllers using strain gauge sensors, Wind Energy, 13, 193–206, https://doi.org/10.1002/we.371, 2010.
Arrieta, A. F., Kuder, I. K., Rist, M., Waeber, T., and Ermanni, P.: Passive load alleviation aerofoil concept with variable stiffness multi-stable composites, Compos. Struct., 116, 235–242, https://doi.org/10.1016/j.compstruct.2014.05.016, 2014.
Bak, C., Zahle, F., Bitsche, R., Kim, T., Yde, A., Henriksen, L. C., Andersen, P. B., Natarajan, A., and Hansen, M. H.: Description of the DTU 10MW Reference Wind Turbine, Danish Wind Power Research 2013, Fredericia, Denmark, DTU Wind Energy Report-I-0092, 2013.
Barlas, T. K., van der Veen, G. J., and van Kuik, G. A. M.: Model predictive control for wind turbines with distributed active flaps: incorporating inflow signals and actuator constraints, Wind Energy, 15, 757–771, https://doi.org/10.1002/we.503, 2011.
Bergami, L. and Poulsen, N. K.: A smart rotor configuration with linear quadratic control of adaptive trailing edge flaps for active load alleviation, Wind Energy, 18, 625–641, https://doi.org/10.1002/we.1716, 2015.
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Short summary
The paper discusses different concepts for reducing loads on wind turbines using movable blade tips. Passive and semi-passive tip solutions move freely in response to air load fluctuations, while in the active case an actuator drives the tip motion in response to load measurements. The various solutions are compared with a standard blade and with each other in terms of their ability to reduce both fatigue and extreme loads.