Uncertain Saturated Discrete‐Time Sliding Mode Control for A Wind Turbine Using A Two‐Mass Model

The aim of this paper is to propose a new design variable speed wind turbine control by discrete‐time sliding mode approach. The control objective is to obtain a maximum extraction of wind energy, while reducing mechanical loads and rotor speed tracking combined with an electromagnetic torque. For t...

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Bibliographic Details
Published in:Asian journal of control 2018-03, Vol.20 (2), p.802-818
Main Authors: Zaafouri, Chaker, Torchani, Borhen, Sellami, Anis, Garcia, Germain
Format: Article
Language:English
Subjects:
Automatic
Clustering
Computer simulation
Design engineering
Discrete‐time sliding mode control
Engineering Sciences
LMI
mechanical modeling
Robust control
Rotor speed
Saturation
saturation constraint
Sliding mode control
unmatched uncertainties
Wind power
wind turbine
Wind turbines
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Summary:The aim of this paper is to propose a new design variable speed wind turbine control by discrete‐time sliding mode approach. The control objective is to obtain a maximum extraction of wind energy, while reducing mechanical loads and rotor speed tracking combined with an electromagnetic torque. For this application, we designed a discrete time sliding mode control using the equivalent discrete time reaching law. Furthermore, a systematic and improved design procedure for uncertainties discrete‐time sliding mode control (SMC) with saturation problem is provided in this paper. The saturation constraint is reported on inputs vector. LMI technique and polytopic models are used in the design of the switching surface. To achieve some performance requirements and good robustness, in the sliding mode, the pole clustering method is investigated. Based on the unit vector control approach, a robust control is developed, then, to direct and maintain the system states onto the sliding manifold in finite time. Finally, a systematic design procedure for DSMC required to achieve a given performance level is provided and its effectiveness is varied by applying it to variable speed wind turbine systems.
ISSN:1561-8625
1934-6093
DOI:10.1002/asjc.1594