Blade Pitch Control with Preview Wind Measurements

Jason Laks, Lucy Y. Pao, Alan Wright, Neil Kelley, Bonnie Jonkman

Research output: Contribution to conferencePaperpeer-review

52 Scopus Citations

Abstract

Light detection and ranging systems are able to measure conditions at a distance in front of wind turbines and are therefore suited to providing preview information of wind disturbances before they impact the turbine blades. In this study, preview-based disturbance feedforward control is investigated for load mitigation both with and without the use of multi-blade coordinate based controllers. Performance is evaluated assuming highly idealized wind measurements that rotate with the blades and more realistic stationary measurements. The results obtained using idealized, "best case" measurements show that excellent performance gains are possible with reasonable pitch rates. However, the results using more realistic wind measurements show that without further optimization of the controller and/or better processing of measurements, errors in determining the shear local to each blade can remove any advantage obtained by using preview-based feedforward techniques.

Original languageAmerican English
Number of pages24
DOIs
StatePublished - 2010
Event48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition - Orlando, Florida
Duration: 4 Jan 20107 Jan 2010

Conference

Conference48th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition
CityOrlando, Florida
Period4/01/107/01/10

NREL Publication Number

  • NREL/CP-500-49427

Other Report Number

  • AIAA 2010-251

Keywords

  • blade radius
  • displacement
  • pitch
  • turbine
  • vector
  • wind energy

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