Title
Robust quasi-continuous sliding-mode control of a variable-speed wind turbine
Abstract
In this paper, a quasi-continuous sliding-mode strategy is done which solves the problem of power generation for variable speed wind turbine systems. The control objective is to maximize the extracted energy from the wind while mechanical loads are reduced. The properties of the proposed controller are robustness to parametric uncertainties of the turbine, robustness with respect to external disturbances, robustness to unmodeled dynamics and accuracy, with an accuracy of higher order and finite reaching time. The high-order sliding-mode controller is applied to reduce the effects of chattering in the generated torque that could lead to increased mechanical stress because of strong torque variations. We use a realistic model which takes into account the nonlinear dynamic aspect of the wind turbine and the turbulent nature of the wind. We assume that only the rotor speed and electric power are available from measurements on the wind turbine. In order to validate the mathematical model and evaluate the performance of proposed controller, we used the National Renewable Energy Laboratory aeroelastic wind turbine simulator FAST. Simulation and validation results show that the proposed control strategy has improvements in comparison with the existing controllers.
Year
DOI
Venue
2012
10.1109/ICEEE.2012.6421196
Electrical Engineering, Computing Science and Automatic Control
Keywords
Field
DocType
nonlinear dynamical systems,power generation control,robust control,torque control,uncertain systems,variable speed gear,variable structure systems,wind power,wind turbines,FAST,National Renewable Energy Laboratory,aeroelastic wind turbine simulator,chattering effects reduction,control objective,electric power,external disturbance,extracted energy maximization,finite reaching time,high-order sliding-mode controller,mathematical model,mechanical load reduction,mechanical stress,nonlinear dynamic aspect,parametric uncertainty,power generation,quasicontinuous sliding-mode strategy,robust quasicontinuous sliding-mode control,rotor speed,torque generation,torque variation,variable speed wind turbine system,variable-speed wind turbine,wind turbulent nature,Maximum power point tracking,nonlinear control,sliding-mode,wind turbines
Control theory,Control theory,Computer science,Direct torque control,Variable speed wind turbine,Control engineering,Turbine,Power optimizer,Robust control,Wind power,Sliding mode control
Conference
ISBN
Citations 
PageRank 
978-1-4673-2170-9
0
0.34
References 
Authors
1
3
Name
Order
Citations
PageRank
Jovan O. Merida100.34
jorge davila2346.64
Luis T. Aguilar32209.09