Wind Turbine Performance Under Icing Conditions

    Research output: Contribution to conferencePaper


    The effects of rime ice on horizontal axis wind turbine performance were estimated. For typical supercooled fog conditions found in cold northern regions, four rine ice accretions on the S809 wind turbine airfoil were predicted using the LASA LEWICE code. The resulting airfoil/ice profile combinations were wind-tunnel tested to obtain the lift, drag and pitching moment characteristics over theReynolds number range 1-2 x 10 to the 6th. These data were used in the PROPID wind-turbine performance prediction code to predict the effects of rime ice on a 450-kW rated-power, 28.7-m diameter turbine operated under both stall-regulated and variable-speed models. Performance losses on the order of 20% were observed for the variable-speed rotor. For the stall-regulated rotor, however, arelatively small rime ice profile yielded significantly larger performance losses. For a larger 0.08c long rime ice protrusion, however, the rated peak power was exceeded by 16% because at high angles the rime ice shape acted like a leading edge flap, thereby increasing the airfoil
    Original languageAmerican English
    Number of pages2
    StatePublished - 1997
    Event1997 ASME Wind Energy Symposium Technical 35th AIAA Aerospace Sciences Meeting and Exhibit - Reno, Nevada
    Duration: 6 Jan 19979 Jan 1997


    Conference1997 ASME Wind Energy Symposium Technical 35th AIAA Aerospace Sciences Meeting and Exhibit
    CityReno, Nevada

    Bibliographical note

    Work performed by University of Illinois at Urbana-Champaign, Urbana, Illinois

    NREL Publication Number

    • NREL/CP-23295


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