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http://dx.doi.org/10.6113/JPE.2013.13.6.1024

Alleviating the Tower Mechanical Load of Multi-MW Wind Turbines with LQR Control  

Nam, Yoonsu (School of Mechanical and Mechatronics Engineering, Kangwon National University)
Kien, Pham Trung (School of Mechanical and Mechatronics Engineering, Kangwon National University)
La, Yo-Han (School of Mechanical and Mechatronics Engineering, Kangwon National University)
Publication Information
Journal of Power Electronics / v.13, no.6, 2013 , pp. 1024-1031 More about this Journal
Abstract
This paper addresses linear quadratic regulation (LQR) for variable speed variable pitch wind turbines. Because of the inherent nonlinearity of wind turbines, a set of operating conditions is identified and then a LQR controller is designed for each of the operating points. The feedback controller gains are then interpolated linearly to get a control law for the entire operating region. In addition, the aerodynamic torque and effective wind speed are estimated online to get the gain-scheduling variable for implementing the controller. The potential of this method is verified through simulation with the help of MATLAB/Simulink and GH Bladed. The performance and mechanical load when using LQR are also compared with those obtained when using a PI controller.
Keywords
LQR control; Multi-MW size wind turbine; Variable speed variable pitch wind turbine; Wind energy conversion system;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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