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		Erhun IYASERE,Mohammed H. SALAH,Darren M. DAWSON,John R. WAGNER,Enver TATLICIOGLU.[en_title][J].Control Theory and Technology,2012,10(2):184~194.[Copy]

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ErhunIYASERE,MohammedH.SALAH,DarrenM.DAWSON,JohnR.WAGNER,EnverTATLICIOGLU
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(Jacobsen, a Textron Company;Department of Mechatronics Engineering, Hashemite University;Department of Electrical & Computer Engineering, Clemson University;Department of Mechanical Engineering, Clemson University;Department of Electrical & Electronics Engineering, Izmir Institute of Technology)

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Received:December 23, 2010Revised:May 03, 2011

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Robust nonlinear control strategy to maximize energy capture in a variable speed wind turbine with an internal induction generator

Erhun IYASERE,Mohammed H. SALAH,Darren M. DAWSON,John R. WAGNER,Enver TATLICIOGLU

(Jacobsen, a Textron Company;Department of Mechatronics Engineering, Hashemite University;Department of Electrical & Computer Engineering, Clemson University;Department of Mechanical Engineering, Clemson University;Department of Electrical & Electronics Engineering, Izmir Institute of Technology)

Abstract:

This paper proposes a control strategy to maximize the wind energy captured in a variable speed wind turbine, with an internal induction generator, at low to medium wind speeds. The proposed strategy controls the tip-speed ratio, via the rotor angular speed, to an optimum point at which the efficiency constant (or power coefficient) is maximum for a particular blade pitch angle and wind speed. This control method allows for aerodynamic rotor power maximization without exact wind turbine model knowledge. Representative numerical results demonstrate that the wind turbine can be controlled to achieve near maximum energy capture.

Key words: Robust nonlinear control Maximum energy capture Wind turbine