Articles | Volume 6, issue 1
Wind Energ. Sci., 6, 221–245, 2021
Wind Energ. Sci., 6, 221–245, 2021

Research article 05 Feb 2021

Research article | 05 Feb 2021

Pressure-based lift estimation and its application to feedforward load control employing trailing-edge flaps

Sirko Bartholomay 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 Airfoil Geometry, in: European Wind Energy Conference, Athens, Vol. 3, 1880–1887, 2006. a
Arnold, J. I. and Dempster, J. B.: Flight test evaluation of an advanced stability augmentation system for B-52 aircraft, J. Aircraft, 6, 343–348,, 1969. a
Åström, K. J. and Murray, M. R.: Feedback Systems: An Introduction for Scientists and Engineers, Princeton University Press, ISBN 9780691135762, 2008. a
Bak, C., Gaunaa, M., Andersen, P. B., Buhl, T., Hansen, P., Clemmensen, K., and Moeller, R.: Wind Tunnel Test on Wind Turbine Airfoil with Adaptive Trailing Edge Geometry, in: 45th AIAA Aerospace S, Reno, NV, USA, 8–11 January 2007, AIAA2007-1016,, 2007. a
Bak, C., Zahle, F., Bitsche, R., and Kim, T.: The DTU 10-MW reference wind turbine, Danish wind power, available at: (last access: 28 January 2020), 2013. a
Short summary
This paper presents two methods on how to estimate the lift force that is created by a wing. These methods were experimentally assessed in a wind tunnel. Furthermore, an active trailing-edge flap, as seen on airplanes for example, is used to alleviate fluctuating loads that are created within the employed wind tunnel. Thereby, an active flow control device that can potentially serve on wind turbines to lower fatigue or lower the material used for the blades is examined.