Optimization of a Feed-Forward Controller Using a CW-lidar System on the CART3

Andrew Scholbrock, Alan Wright, Florian Shizmann, David Schlipf, Steffen Raach, Chris Slinger, John Medley, Michael Harris, Ervin Bossanyi, Po Cheng

Research output: Contribution to conferencePaperpeer-review

17 Scopus Citations


This work presents results from a new field-testing campaign conducted on the three-bladed Controls Advanced Research Turbine (CART3) at the National Renewable Energy Laboratory in 2014. Tests were conducted using a commercially available, nacelle-mounted continuous-wave lidar system from ZephIR Lidar for the implementation of a lidar-based collective pitch feed-forward controller. During the campaign, the data processing of the lidar system was optimized for higher availability. Furthermore, the optimal scan distance was investigated for the CART3 by means of a spectra-based analytical model and found to match the lidar's capabilities well. Throughout the campaign the predicted correlation between the lidar measurements and the turbine's reaction was confirmed from the measured data. Additionally, the baseline feedback controller's gains were tuned based on a simulation study that included the lidar system to achieve further load reductions. This led to some promising first results, which are presented at the end of this paper.

Original languageAmerican English
Number of pages6
StatePublished - 28 Jul 2015
Event2015 American Control Conference, ACC 2015 - Chicago, United States
Duration: 1 Jul 20153 Jul 2015


Conference2015 American Control Conference, ACC 2015
Country/TerritoryUnited States

Bibliographical note

Publisher Copyright:
© 2015 American Automatic Control Council.

NREL Publication Number

  • NREL/CP-5000-63917


  • CART3
  • controls advanced research turbine
  • field testing
  • National Wind Technology Center
  • NREL
  • NWTC


Dive into the research topics of 'Optimization of a Feed-Forward Controller Using a CW-lidar System on the CART3'. Together they form a unique fingerprint.

Cite this