Demonstration of a Basis for Tall Wind Turbine Design, EUDP Project Final Report

Anand Natarajan, Nikolay Krasimirov Dimitrov, Peter Hauge Madsen, Jacob Berg, Mark C. Kelly, Gunner Chr. Larsen, Jakob Mann, David Robert Verelst, John Dalsgaard Sørensen, Henrik Toft, Imad Abdallah, N.-J. Tarp-Johansen, Thomas Krogh, Jesper Stærdahl, Christer Eriksson, Erik Jørgensen, Frank Klintø, Leo Thesbjerg

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    Wind turbine design using calibrated wind models have been proposed to be used in conjunction with load cases which lead to reduced uncertainties in the design of wind turbines with hub heights above 60m. These recommended wind profiles have been made for shear, wind directional change and turbulence. The wind turbulence models used in the loads simulations have been calibrated so that their model parameters reflect the atmospheric stability conditions and the quantile of turbulence intensity considered. Consequently large multi megawatt turbines being designed today can benefit from these more advanced wind inflow models. A revision of the IEC 61400-1standard is being developed and has incorporated some of the recommendations made from this project.This project demonstrated the impact of wind models by simulating wind turbine loads based on high frequency wind measurements taken between 100m and 200m altitude performed at Høvsøre in Denmark. The project also demonstrated the impact of the new wind models on load cases and the certification envelope of turbines. Further the project provided a detailed assessment of safety factors for IEC 61400-1 load cases using reliability-based procedures incorporating the new models and this has been made as an Annex to the new standard that is due to be issued.
    Original languageEnglish
    PublisherDTU Wind Energy
    Number of pages101
    ISBN (Electronic)978-87-93278-65-3
    Publication statusPublished - 2016
    SeriesDTU Wind Energy E

    Bibliographical note

    EUDP 11-II 64011 -0352


    • DTU Wind Energy E-0108
    • DTU Wind Energy E-108


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