Maximizing Energy Capture of Fixed-Pitch Variable-Speed Wind Turbines

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Field tests of a variable-speed, stall-regulated wind turbine were conducted at a US Department of Energy Laboratory. A variable-speed generating system, comprising a doubly-fed generator and series-resonant power converter, was installed on a 275-kW, downwind, two-blade wind turbine. Gearbox, generator, and converter efficiency were measured in the laboratory so that rotor aerodynamic efficiency could be determined from field measurement of generator power. The turbine was operated at several discrete rotational speeds to develop power curves for use in formulating variable-speed control strategies. Test results for fixed-speed and variable-speed operation are presented along with discussion and comparison of the variable-speed control ... continued below

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Pierce, K. & Migliore, P. August 1, 2000.

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Field tests of a variable-speed, stall-regulated wind turbine were conducted at a US Department of Energy Laboratory. A variable-speed generating system, comprising a doubly-fed generator and series-resonant power converter, was installed on a 275-kW, downwind, two-blade wind turbine. Gearbox, generator, and converter efficiency were measured in the laboratory so that rotor aerodynamic efficiency could be determined from field measurement of generator power. The turbine was operated at several discrete rotational speeds to develop power curves for use in formulating variable-speed control strategies. Test results for fixed-speed and variable-speed operation are presented along with discussion and comparison of the variable-speed control methodologies. Where possible, comparisons between fixed-speed and variable-speed operation are shown.

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  • 38th AIAA Aerospace Sciences Meeting and Exhibit, Reno, NV (US), 01/10/2000--01/13/2000

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  • Report No.: NREL/CP-500-27551
  • Grant Number: AC36-99GO10337
  • Office of Scientific & Technical Information Report Number: 763310
  • Archival Resource Key: ark:/67531/metadc722792

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  • August 1, 2000

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  • Sept. 29, 2015, 5:31 a.m.

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  • March 31, 2016, 6:46 p.m.

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Pierce, K. & Migliore, P. Maximizing Energy Capture of Fixed-Pitch Variable-Speed Wind Turbines, article, August 1, 2000; Golden, Colorado. (digital.library.unt.edu/ark:/67531/metadc722792/: accessed August 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.