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Journal article · Conference paper

Damping of Offshore Wind Turbine Tower Vibrations by a Stroke Amplifying Brace

By Brodersen, Mark Laier1,2; Høgsberg, Jan Becker1,2

From

Department of Mechanical Engineering, Technical University of Denmark1

Solid Mechanics, Department of Mechanical Engineering, Technical University of Denmark2

The potential of installing dampers inside the tower of an offshore wind turbine is investigated through simulations. Dampers are installed at the bottom to act on the curvature of the tower, and it is shown that dampers installed in suitable braces have the potential to increase the critical damping ratio of the two lowest tower modes by 1 percent.

By using a toggle-brace system, damper stroke is increased, while the damper force is reduced. Finally, by installing the dampers in a symmetric configuration, tuning for maximum damping is approximately independent of the orientation of the rotor, thereby making this installation of dampers feasible.

Language: English
Year: 2014
Pages: 258-267
Proceedings: EERA DeepWind 2014 - 11th Deep Sea Offshore Wind R&D Conference
ISSN: 18766102
Types: Journal article and Conference paper
DOI: 10.1016/j.egypro.2014.07.235
ORCIDs: Høgsberg, Jan Becker
Keywords

Fixed offshore wind turbine Passive damping Stroke amplifying toggle brace

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