Stability Analysis of an Adaptive Torque Controller for Variable Speed Wind Turbines

Kathryn E. Johnson, Lucy Y. Pao, Mark J. Balas, Vishwesh Kulkarni, J. Lee Fingersh

Research output: Contribution to conferencePaperpeer-review

43 Scopus Citations

Abstract

Variable speed wind turbines are designed to follow wind speed variations in low winds in order to maximize aerodynamic efficiency. Unfortunately, uncertainty in the aerodynamic parameters may lead to sub-optimal power capture in variable speed turbines. Adaptive generator torque control is one method of eliminating this sub-optimality; however, before adaptive control can become widely used in the wind industry, it must be proven to be safe. This paper analyzes the stability of an adaptive torque control law and the gain adaptation law in use on the Controls Advanced Research Turbine (CART) at the National Renewable Energy Laboratory's National Wind Technology Center.

Original languageAmerican English
Pages4087-4094
Number of pages8
DOIs
StatePublished - 2004
Event2004 43rd IEEE Conference on Decision and Control (CDC) - Nassau, Bahamas
Duration: 14 Dec 200417 Dec 2004

Conference

Conference2004 43rd IEEE Conference on Decision and Control (CDC)
Country/TerritoryBahamas
CityNassau
Period14/12/0417/12/04

Bibliographical note

See NREL/CP-500-36756 for preprint version

NREL Publication Number

  • NREL/CP-500-44208

Keywords

  • torque control
  • variable speed
  • wind turbine

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