Comparing Sources of Damping of Cross-Wind Motion

Niels Jacob Tarp-Johansen, Christian Mørch, Lars Andersen, Erik Damgaard Christensen, Sten Tronæs Frandsen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    Abstract

    Cross-wind vibrations due to wave loading misaligned with the wind causes fatigue known to be design driving for support structures of large turbines offshore increasing fatigue loads notably compared to the along-wind fatigue. The small amount of damping assumed for cross-wind motion in current practise plays a key role in this. The questions are: does more damping exist and is one of the sources of damping the main contributor allowing for site-independent guidelines. The aim of this paper is to address these issues. It is demonstrated that tower dampers are important in order to tackle the excessive cross-wind vibrations.
    Original languageEnglish
    Title of host publicationEuropean Offshore Wind 2009 : Conference & Exhibition
    PublisherThe European Wind Energy Association
    Publication date2009
    Publication statusPublished - 2009
    EventThe European Offshore Wind Conference & Exhibition - Stockholm, Sweden
    Duration: 14 Sep 200916 Sep 2009

    Conference

    ConferenceThe European Offshore Wind Conference & Exhibition
    CountrySweden
    CityStockholm
    Period14/09/200916/09/2009

    Cite this

    Tarp-Johansen, N. J., Mørch, C., Andersen, L., Christensen, E. D., & Frandsen, S. T. (2009). Comparing Sources of Damping of Cross-Wind Motion. In European Offshore Wind 2009: Conference & Exhibition The European Wind Energy Association.
    Tarp-Johansen, Niels Jacob ; Mørch, Christian ; Andersen, Lars ; Christensen, Erik Damgaard ; Frandsen, Sten Tronæs. / Comparing Sources of Damping of Cross-Wind Motion. European Offshore Wind 2009: Conference & Exhibition. The European Wind Energy Association, 2009.
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    title = "Comparing Sources of Damping of Cross-Wind Motion",
    abstract = "Cross-wind vibrations due to wave loading misaligned with the wind causes fatigue known to be design driving for support structures of large turbines offshore increasing fatigue loads notably compared to the along-wind fatigue. The small amount of damping assumed for cross-wind motion in current practise plays a key role in this. The questions are: does more damping exist and is one of the sources of damping the main contributor allowing for site-independent guidelines. The aim of this paper is to address these issues. It is demonstrated that tower dampers are important in order to tackle the excessive cross-wind vibrations.",
    author = "Tarp-Johansen, {Niels Jacob} and Christian M{\o}rch and Lars Andersen and Christensen, {Erik Damgaard} and Frandsen, {Sten Tron{\ae}s}",
    year = "2009",
    language = "English",
    booktitle = "European Offshore Wind 2009",
    publisher = "The European Wind Energy Association",

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    Tarp-Johansen, NJ, Mørch, C, Andersen, L, Christensen, ED & Frandsen, ST 2009, Comparing Sources of Damping of Cross-Wind Motion. in European Offshore Wind 2009: Conference & Exhibition. The European Wind Energy Association, The European Offshore Wind Conference & Exhibition, Stockholm, Sweden, 14/09/2009.

    Comparing Sources of Damping of Cross-Wind Motion. / Tarp-Johansen, Niels Jacob; Mørch, Christian; Andersen, Lars; Christensen, Erik Damgaard; Frandsen, Sten Tronæs.

    European Offshore Wind 2009: Conference & Exhibition. The European Wind Energy Association, 2009.

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    TY - GEN

    T1 - Comparing Sources of Damping of Cross-Wind Motion

    AU - Tarp-Johansen, Niels Jacob

    AU - Mørch, Christian

    AU - Andersen, Lars

    AU - Christensen, Erik Damgaard

    AU - Frandsen, Sten Tronæs

    PY - 2009

    Y1 - 2009

    N2 - Cross-wind vibrations due to wave loading misaligned with the wind causes fatigue known to be design driving for support structures of large turbines offshore increasing fatigue loads notably compared to the along-wind fatigue. The small amount of damping assumed for cross-wind motion in current practise plays a key role in this. The questions are: does more damping exist and is one of the sources of damping the main contributor allowing for site-independent guidelines. The aim of this paper is to address these issues. It is demonstrated that tower dampers are important in order to tackle the excessive cross-wind vibrations.

    AB - Cross-wind vibrations due to wave loading misaligned with the wind causes fatigue known to be design driving for support structures of large turbines offshore increasing fatigue loads notably compared to the along-wind fatigue. The small amount of damping assumed for cross-wind motion in current practise plays a key role in this. The questions are: does more damping exist and is one of the sources of damping the main contributor allowing for site-independent guidelines. The aim of this paper is to address these issues. It is demonstrated that tower dampers are important in order to tackle the excessive cross-wind vibrations.

    M3 - Article in proceedings

    BT - European Offshore Wind 2009

    PB - The European Wind Energy Association

    ER -

    Tarp-Johansen NJ, Mørch C, Andersen L, Christensen ED, Frandsen ST. Comparing Sources of Damping of Cross-Wind Motion. In European Offshore Wind 2009: Conference & Exhibition. The European Wind Energy Association. 2009