Volume 3, issue 1 | Copyright

Special issue: The Science of Making Torque from Wind (TORQUE) 2016

Wind Energ. Sci., 3, 57-73, 2018
https://doi.org/10.5194/wes-3-57-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research articles 05 Mar 2018

Research articles | 05 Mar 2018

A model for quick load analysis for monopile-type offshore wind turbine substructures

Signe Schløer1, Laura Garcia Castillo2, Morten Fejerskov2, Emanuel Stroescu2, and Henrik Bredmose1 Signe Schløer et al.
  • 1DTU Wind Energy, Nils Koppels Allé, Building. 403, 2800 Kgs. Lyngby, Denmark
  • 2Universal Foundation, Langerak 17, 9220 Aalborg Øst, Denmark

Abstract. A model for quick load analysis, QuLA, of an offshore wind turbine substructure is presented. The aerodynamic rotor loads and damping are pre-computed for a land-based configuration. The dynamic structural response is represented by the first global fore-aft mode only and is computed in the frequency domain with phases using the equation of motion. The model is compared to the state-of-the-art aeroelastic code Flex5. Both lifetime fatigue and extreme loads are considered in the comparison. In general there is good agreement between the two models. Some deviations for the sectional forces are explained in terms of the model simplifications. The differences in the sectional moments are found to be within 10% for the fatigue load case and 10% for the extreme load condition.

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A model for quick load analysis is presented. This is a fast model for the calculation of dynamic loads of an offshore wind turbine tower and foundation. The model is compared to the state-of-the-art aeroelastic code. In general, there is good similarity between the two models. This indicates that in the early stage of the design phase a simple dynamic model can be used to make a preliminary design of the foundation and wind turbine tower.
A model for quick load analysis is presented. This is a fast model for the calculation of...
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