Authors:
Nadhira Khezami
1
;
Xavier Guillaud
2
and
Naceur Benhadj Braiek
3
Affiliations:
1
LECAP/L2EP, France
;
2
L2EP, France
;
3
LECAP, École Polytechnique de Tunisie, Tunisia
Keyword(s):
LQ controller, Multimodel approach, Global stability, LMI, Lyapunov equations.
Related
Ontology
Subjects/Areas/Topics:
Artificial Intelligence
;
Control and Supervision Systems
;
Formal Methods
;
Informatics in Control, Automation and Robotics
;
Intelligent Control Systems and Optimization
;
Nonlinear Signals and Systems
;
Planning and Scheduling
;
Real-Time Systems Control
;
Robotics and Automation
;
Signal Processing, Sensors, Systems Modeling and Control
;
Simulation and Modeling
;
Symbolic Systems
Abstract:
In this paper, a linear quadratic (LQ) control law combined with a multimodel approach is designed for variable-speed, variable-pitch wind turbines. The presented technique is based on an optimal control method in order to improve the system global dynamic. A set of linear local models (sub-models) is then defined for different operating points corresponding to high wind speeds. Thereafter, a global asymptotic stability analysis is developed by solving a bilinear matrix inequality (BMI) feasibility problem based on the local stability of the sub-models.