Field Testing of Feedforward Collective Pitch Control on the CART2 Using a Nacelle-Based Lidar Scanner Paper No. 012090

David Schlipf, Paul Fleming, Florian Haizmann, Andrew Scholbrock, Martin Hofsäß, Alan Wright, Po Wen Cheng

Research output: Contribution to journalArticlepeer-review

50 Scopus Citations

Abstract

This work presents the results from a field test of LIDAR assisted collective pitch control using a scanning LIDAR device installed on the nacelle of a mid-scale research turbine. A nonlinear feedforward controller is extended by an adaptive filter to remove all uncorrelated frequencies of the wind speed measurement to avoid unnecessary control action. Positive effects on the rotor speed regulation as well as on tower, blade and shaft loads have been observed in the case that the previous measured correlation and timing between the wind preview and the turbine reaction are accomplish. The feedforward controller had negative impact, when the LIDAR measurement was disturbed by obstacles in front of the turbine. This work proves, that LIDAR is valuable tool for wind turbine control not only in simulations but also under real conditions. Furthermore, the paper shows that further understanding of the relationship between the wind measurement and the turbine reaction is crucial to improve LIDAR assisted control of wind turbines.

Original languageAmerican English
Article number012090
Number of pages13
JournalJournal of Physics: Conference Series
Volume555
Issue number1
DOIs
StatePublished - 2014
Event4th Scientific Conference on the Science of Making Torque from Wind - Oldenburg, Germany
Duration: 9 Oct 201211 Oct 2012

Bibliographical note

Publisher Copyright:
© Published under licence by IOP Publishing Ltd.

NREL Publication Number

  • NREL/JA-5000-55222

Keywords

  • LIDAR
  • wind energy
  • wind turbines

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