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ew 19(24): e7

Research Article

Robust Controller Design for Speed Regulation of a Wind Turbine using 16-Plant Theorem Approach

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  • @ARTICLE{10.4108/eai.16-10-2019.160841,
        author={N.  V. A.  Ravikumar and G.  Saraswathi},
        title={Robust Controller Design for Speed Regulation of a Wind Turbine using 16-Plant Theorem Approach},
        journal={EAI Endorsed Transactions on Energy Web},
        volume={6},
        number={24},
        publisher={EAI},
        journal_a={EW},
        year={2019},
        month={10},
        keywords={Robust control, Kharitonov’s theorem, 16-plant theorem, PI controller, interval polynomial, interval plant},
        doi={10.4108/eai.16-10-2019.160841}
    }
    
  • N. V. A. Ravikumar
    G. Saraswathi
    Year: 2019
    Robust Controller Design for Speed Regulation of a Wind Turbine using 16-Plant Theorem Approach
    EW
    EAI
    DOI: 10.4108/eai.16-10-2019.160841
N. V. A. Ravikumar1,2,*, G. Saraswathi3
  • 1: Research Scholar, Department of Electrical & Electronics Engineering, JNTUK, Kakinada, Andhra Pradesh, India
  • 2: Sr. Assistant Professor, Department of Power Engineering, GMR Institute of Technology, Rajam - 532127, Srikakulam, Andhra Pradesh, India
  • 3: Professor & Principal, University College of Engineering, Vizianagaram, JNTUK, Kakinada, Dwarapudi(post), 535003, Andhra Pradesh, India
*Contact email: ravikumar.nva@gmrit.edu.in

Abstract

Large scale wind turbines are subjected to fatigue, aerodynamics, structural flexibility and wind turbulence which lead to uncertain behavior of the wind turbine. The uncertainties are due to differences between the mathematical model and the actual dynamics of the system in operation and the worn and torn effects. These elements are combinations of mass, stiffness, damping factors and moments of inertia of the rotor and generator. The uncertainties or perturbations in the wind turbine are indicated by variations between ±25% of the nominal values of the elements of the system matrix. These uncertainties in the wind turbine are dealt with the proposed robustly stabilizing controller in this paper. The stable (Kp, Ki) regions of a Proportional-Integral (PI) controller are chosen by the Kharitonov’s theorem based 16-plant model. It can be shown that a simple PI controller can become robust by the correct selection of its parameters. The furnished results validate the above statement.

Keywords
Robust control, Kharitonov’s theorem, 16-plant theorem, PI controller, interval polynomial, interval plant
Received
2019-05-28
Accepted
2019-10-15
Published
2019-10-16
Publisher
EAI
http://dx.doi.org/10.4108/eai.16-10-2019.160841

Copyright © 2019 N. V. A. Ravikumar, licensed to EAI. This is an open access article distributed under the terms of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/), which permits unlimited use, distribution and reproduction in any medium so long as the original work is properly cited.

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