Control can improve the performance of wind turbines by enhancing energy capture and reducing dynamic loads. At the National Renewable Energy Laboratory, we are beginning to design control algorithms for regulation of turbine speed and power using state-space control designs. In this paper, we describe the design of such a control algorithm for regulation of rotor speed in full-load operation (Region 3) for a two-bladed wind turbine. We base our control design on simple linear models of a turbine, which contain rotor and generator rotation, drive train torsion, rotor flap (first mode only), and tower fore-aft degrees of freedom (DOFs). Wind-speed fluctuations are accounted for using Disturbance Accommodating Control (DAC). We show the capability of these control schemes to stabilize the modeled turbine modes via pole placement, while using state estimation to reduce the number of turbine measurements that are needed for these algorithms. These controllers are incorporated into a simulation code and simulated for various conditions. Finally, conclusions to this work and future studies are outlined.
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November 2003
Technical Papers
Design of State-Space-Based Control Algorithms for Wind Turbine Speed Regulation
Alan D. Wright,
Alan D. Wright
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401
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Mark J. Balas, AIAA Fellow
Mark J. Balas, AIAA Fellow
Department of Aerospace Engineering Science, University of Colorado at Boulder, Boulder, CO 30309-0429
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Alan D. Wright
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401
Mark J. Balas, AIAA Fellow
Department of Aerospace Engineering Science, University of Colorado at Boulder, Boulder, CO 30309-0429
Contributed by the Solar Energy Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF SOLAR ENERGY ENGINEERING. Manuscript received by the ASME Solar Energy Division July 26, 2002; final revision, June 26, 2003. Associate Editor: D. Berg.
J. Sol. Energy Eng. Nov 2003, 125(4): 386-395 (10 pages)
Published Online: November 26, 2003
Article history
Received:
July 26, 2002
Revised:
June 26, 2003
Online:
November 26, 2003
Citation
Wright, A. D., and Balas, M. J. (November 26, 2003). "Design of State-Space-Based Control Algorithms for Wind Turbine Speed Regulation ." ASME. J. Sol. Energy Eng. November 2003; 125(4): 386–395. https://doi.org/10.1115/1.1621673
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