An examination of loads and responses of a wind turbine undergoing variable-speed operation

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The National Renewable Energy Laboratory has recently developed the ability to predict turbine loads and responses for machines undergoing variable-speed operation. The wind industry has debated the potential benefits of operating wind turbine sat variable speeds for some time. Turbine system dynamic responses (structural response, resonance, and component interactions) are an important consideration for variable-speed operation of wind turbines. The authors have implemented simple, variable-speed control algorithms for both the FAST and ADAMS dynamics codes. The control algorithm is a simple one, allowing the turbine to track the optimum power coefficient (C{sub p}). The objective of this paper is to ... continued below

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11 p.

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Wright, A.D.; Buhl, M.L. Jr. & Bir, G.S. November 1, 1996.

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Description

The National Renewable Energy Laboratory has recently developed the ability to predict turbine loads and responses for machines undergoing variable-speed operation. The wind industry has debated the potential benefits of operating wind turbine sat variable speeds for some time. Turbine system dynamic responses (structural response, resonance, and component interactions) are an important consideration for variable-speed operation of wind turbines. The authors have implemented simple, variable-speed control algorithms for both the FAST and ADAMS dynamics codes. The control algorithm is a simple one, allowing the turbine to track the optimum power coefficient (C{sub p}). The objective of this paper is to show turbine loads and responses for a particular two-bladed, teetering-hub, downwind turbine undergoing variable-speed operation. The authors examined the response of the machine to various turbulent wind inflow conditions. In addition, they compare the structural responses under fixed-speed and variable-speed operation. For this paper, they restrict their comparisons to those wind-speed ranges for which limiting power by some additional control strategy (blade pitch or aileron control, for example) is not necessary. The objective here is to develop a basic understanding of the differences in loads and responses between the fixed-speed and variable-speed operation of this wind turbine configuration.

Physical Description

11 p.

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OSTI as DE97000072

Source

  • 16. American Society of Mechanical Engineers wind energy symposium, Reno, NV (United States), 6-9 Jan 1997

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  • Other: DE97000072
  • Report No.: NREL/CP--440-21674
  • Report No.: CONF-970135--5
  • Grant Number: AC36-83CH10093
  • Office of Scientific & Technical Information Report Number: 425337
  • Archival Resource Key: ark:/67531/metadc685542

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  • November 1, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • March 28, 2016, 1:55 p.m.

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Wright, A.D.; Buhl, M.L. Jr. & Bir, G.S. An examination of loads and responses of a wind turbine undergoing variable-speed operation, article, November 1, 1996; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc685542/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.