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  • ENERGY PRODUCTION AND CONVERSION  (4)
  • 1980-1984  (4)
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  • 1980-1984  (4)
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  • 1
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    Wind turbulence inputs for horizontal axis wind turbines (1981)
    In:  CASI
    Details
    Publication Date: 2016-06-07
    Description: Wind turbine response characteristics in the presence of atmospheric turbulence was predicted using two major modeling steps. First, the important atmospheric sources for the force excitations felt by the wind turbine system were identified and characterized. Second, a dynamic model was developed which describes how these excitations are transmitted through the structure and power train. The first modeling step, that of quantifying the important excitations due to the atmospheric turbulence was established. The dynamic modeling of the second step was undertaken separately.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Lewis Research Center Wind Turbine Dyn.; p 101-112
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 2
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    Wind response characteristics of horizontal axis wind turbines (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: It was the objective of the work reported here, and in the companion paper 1 . A broader examination of wind turbine dynamic response to turbulence, and attempts to ascertain the features of turbulence that wind turbines are most sensitive to were made. A statistical description of the wind input including all three wind components and allowing linear wind gradients across the rotor disk, was used together with quasi-static aerodynamic theory and an elementary structural model involving only a few degrees of freedom. The idea was to keep the turbine model simple and show the benefits of this type of statistical wind representation before attempting to use a more complex turbine model. As far as possible, the analysis was kept in the simplest form, while still preserving key physical responses.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA. Lewis Research Center Wind Turbine Dyn.; p 87-99
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Wind Turbine Dynamics (1981)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Recent progress in the analysis and prediction of the dynamic behavior of wind turbine generators is discussed. The following areas were addressed: (1) the adequacy of state of the art analysis tools for designing the next generation of wind power systems; (2) the use of state of the art analysis tools designers; and (3) verifications of theory which might be lacking or inadequate. Summaries of these informative discussions as well as the questions and answers which followed each paper are documented in the proceedings.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-CP-2185 , NAS 1.55:2185 , CONF-810226 , SERI/CP-635-1238
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 4
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    Large Horizontal-Axis Wind Turbines (1982)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The proceedings of a workshop held in Cleveland, July 28-30, 1981 are described. The workshop emphasized recent experience in building and testing large propeller-type wind turbines, expanding upon the proceedings of three previous DOE/NASA workshops at which design and analysis topics were considered. A total of 41 papers were presented on the following subjects: current and advanced large wind turbine systems, rotor blade design and manufacture, electric utility activities, research and supporting technology, meteorological characteristics for design and operation, and wind resources assessments for siting.
    Keywords: ENERGY PRODUCTION AND CONVERSION
    Type: NASA-CP-2230 , NAS 1.55:2230 , CONF-810752 , SERI/CP-635-1273 , Large Horizontal-Axis Wind Turbines; Jul 28, 1981 - Jul 30, 1981; Cleveland
    Format: application/pdf
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    NASA TECHNICAL REPORTS
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