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Energy-Reliability Optimization of Wind Energy Conversion Systems by Sliding Mode Control

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5 Author(s)
Munteanu, I. ; Dunarea de Jos Univ. of Galaji, Galati ; Bacha, S. ; Bratcu, A.I. ; Guiraud, J.
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This paper describes a manner in which the energy-reliability optimization of wind energy conversion systemspsila operation can be achieved by means of the sliding mode control. The proposed approach aims at designing a tradeoff between maximizing the power harvested from wind by a horizontal-axis-grid-connected variable-speed doubly-fed-induction-generator-based wind power system and minimizing its mechanical stress. An appropriate sliding surface has been found in the speed-power plane, which allows the operation more or less close to the optimal regimes characteristic. Thus, by torque controlling the generator, an energy-reliability optimization of the wind turbine behavior is performed. The proposed control law is validated by both off-line and real-time simulation; the latter on a dedicated experimental rig, based upon the hardware-in-the-loop simulation concept. The results show that the control objective is fully accomplished.

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Energy Conversion, IEEE Transactions on  (Volume:23 ,  Issue: 3 )