Journal cover Journal topic
Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
https://doi.org/10.5194/wes-2017-11
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research articles
06 Mar 2017
Review status
This discussion paper is a preprint. A revision of the manuscript was accepted for the journal Wind Energy Science (WES).
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 1The Technical University of Denmark, Nils Koppels Allé, Building. 403, DK-2800 Kgs. Lyngby, Denmark
2Universal Foundation, Langerak 17, DK-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 precomputed for a load-based configuration. The dynamic structural response is represented by the first global fore-aft mode only and is computed in the frequency domain using the equation of motion. The model is compared to the state of the art aeroelastic code, Flex5. Both both life time fatigue and extreme loads are considered in the comparison. In general there is good similarity between the two models. Some deviation for the sectional forces are explained in terms of the model simplifications. The difference in the sectional moments are found to be within 14 % for the fatigue load case and 10 % for the extreme load condition.

Citation: Schløer, S., Garcia Castillo, L., Fejerskov, M., Stroescu, E., and Bredmose, H.: A model for quick load analysis for monopile-type offshore wind turbine substructures, Wind Energ. Sci. Discuss., https://doi.org/10.5194/wes-2017-11, in review, 2017.
Signe Schløer et al.
Signe Schløer et al.
Signe Schløer et al.

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Short summary
A model for Quick Load Analysis is presented. This is a fast model for 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 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 calculation of dynamic...
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