Journal cover Journal topic
Wind Energy Science The interactive open-access journal of the European Academy of Wind Energy
https://doi.org/10.5194/wes-2018-27
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research articles
26 Apr 2018
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Wind Energy Science (WES).
Optimal Output Feedback H Torque Control of a Wind Turbine Rotor using a Parametrically Scheduled Model
Dana Martin1, Kathryn Johnson1, Christopher Bay1,2, Daniel Zalkind2, Lucy Pao2, Meghan Kaminski3, and Eric Loth3 1Colorado School of Mines Golden, CO 80401
2University of Colorado Boulder, CO 80309
3University of Virginia, VA 22904
Abstract. Wind turbines are nonlinear, time-varying systems that are subject and sensitive to model parameter variations and a stochastic wind field. For such applications, Linear Parameter Varying (LPV) control provides a state-space approach to designing nonlinear controllers with robust performance. LPV uses multi-input multi-output (MIMO) model with a guaranteed limit on the exogenous disturbance's gain with respect to performance signals. A robust matrix inequality synthesis of an H based performance LPV controller using a parametrically varying model will be developed with the goal of obtaining a torque controller with drive-train damping properties. The technique guarantees a-priori performance values and closed-loop stability for the simplified model, and provides a systematic tuning procedure to adjust controller performance.
Citation: Martin, D., Johnson, K., Bay, C., Zalkind, D., Pao, L., Kaminski, M., and Loth, E.: Optimal Output Feedback H Torque Control of a Wind Turbine Rotor using a Parametrically Scheduled Model, Wind Energ. Sci. Discuss., https://doi.org/10.5194/wes-2018-27, in review, 2018.
Dana Martin et al.
Dana Martin et al.
Dana Martin et al.

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Short summary
The paper provides an account of the synthesis of a Linear Parameter Varying (LPV) controller and its improved performance as applied to a down-wind, two bladed, per-aligned rotor. The analysis of controller performance during a turbulent inflow with a mean wind speed of 4 m/s show increased performance in terms of better tip speed ratio tracking and reduced fatigue damage to various turbine components. The results provide a basis of LPV control and its ability to increase turbine lifetime.
The paper provides an account of the synthesis of a Linear Parameter Varying (LPV) controller...
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