Aeroelastic instability problems for wind turbines

Morten Hartvig Hansen

    Research output: Contribution to journalJournal articleResearchpeer-review


    This paper deals with the aeroelostic instabilities that have occurred and may still occur for modem commercial wind turbines: stall-induced vibrations for stall-turbines, and classical flutter for pitch-regulated turbines. A review of previous works is combined with derivations of analytical stability limits for typical blade sections that show the fundamental mechanisms of these instabilities. The risk of stall-induced vibrations is mainly related to blade airfoil characteristics, effective direction of blade vibrations and structural damping, whereas the blade tip speed, torsional blade stiffness and chordwise position of the center of gravity along the blades are the main parameters for flutter. These instability characteristics are exemplified by aeroelastic stability analyses of different wind turbines. The review of each aeroelastic instability ends with a list of current research issues that represent unsolved aeroelostic instability problems for wind turbines. Copyright (c) 2007 John Wiley & Sons, Ltd.
    Original languageEnglish
    JournalWind Energy
    Issue number6
    Pages (from-to)551-577
    Publication statusPublished - 2007


    • horizontal axis
    • turbine
    • dynamic stability
    • mechanical vibration


    Dive into the research topics of 'Aeroelastic instability problems for wind turbines'. Together they form a unique fingerprint.

    Cite this