Aeroelastic design and LPV modelling of an experimental wind turbine blade equipped with free-floating flaps

Aeroelastic design and LPV modelling of an experimental wind turbine blade equipped with free-floating flaps

Navalkar, S.T. (TU Delft Team Raf Van de Plas)
Bernhammer, L.O. (TU Delft Wind Energy)
Sodja, J. (TU Delft Aerospace Structures & Computational Mechanics)
Slinkman, C.J. (TU Delft Support Delft Center for Systems and Control)
van Wingerden, J.W. (TU Delft Team Raf Van de Plas)
van Kuik, G.A.M. (TU Delft Wind Energy)

Bossanyi et al, E. (editor)

2016

Trailing edge aps located outboard on wind turbine blades have recently shown considerable potential in the alleviation of turbine lifetime dynamic loads. The concept of the free-oating ap is speci_cally interesting for wind turbines, on account of its modularity and enhanced control authority. Such a ap is free to rotate about its axis; camberline control of the free-oating ap allows for aeroelastic control of blade loads. This paper describes the design of a scaled wind turbine blade instrumented with free-oating aps, intended for use in wind tunnel experiments. The nature of the ap introduces a coupled form of utter due to the aeroelastic coupling of ap rigid-body and blade out-of-plane modes; for maximal control authority it is desired to operate close to the utter limit. Analytical and numerical methods are used to perform a utter analysis of the turbine blade. It is shown that the potential ow aeroelastic model can be recast as a continuous-time Linear-Parameter-Varying (LPV) state space model of a low order, for which formal controller design methodologies are readily available.

http://resolver.tudelft.nl/uuid:2d9ad948-d4d2-4d56-b3b9-96f77126e80b

https://doi.org/10.1088/1742-6596/753/4/042010

IOP Publishing, Bristol, UK

Journal of Physics: Conference Series: TORQUE 2016: The Science of Making Torque from Wind, 753 (C. Aeroservoelasticity, loads, structures and materials)

TORQUE 2016: 6th International Conference "The Science of Making Torque from Wind", 2016-10-05 → 2016-10-07, Technische Universität München (TUM), Campus Garching, Munich, Germany

Journal of Physics: Conference Series, 1742-6588, 753 (C. Aeroservoelasticity, loads, structures and materials)

Institutional Repository

conference paper

© 2016 S.T. Navalkar, L.O. Bernhammer, J. Sodja, C.J. Slinkman, J.W. van Wingerden, G.A.M. van Kuik