Wind Turbine Model and Observer in Takagi-Sugeno Model Structure

The Science of Making Torque from Wind 2012

Georg, Sören^1 ; Müller, Matthias^1,2 ; Schulte, Horst^1

HTW Berlin, Department of Engineering I, Control Engineering, Berlin, Germany^1

Key Wind Energy GmbH, Berlin, Germany^2

关键词: Disturbance observer;    Exact representations;    Observer gain matrix;    Optimal fuzzy control;    Sector nonlinearity;    Takagi-Sugeno modeling;    Takagi-Sugeno models;    Wind turbine modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/555/1/012042/pdf
DOI  :  10.1088/1742-6596/555/1/012042

来源: IOP

【 摘 要 】

Based on a reduced-order, dynamic nonlinear wind turbine model in Takagi- Sugeno (TS) model structure, a TS state observer is designed as a disturbance observer to estimate the unknown effective wind speed. The TS observer model is an exact representation of the underlying nonlinear model, obtained by means of the sector-nonlinearity approach. The observer gain matrices are obtained by means of a linear matrix inequality (LMI) design approach for optimal fuzzy control, where weighting matrices for the individual system states and outputs are included. The observer is tested in simulations with the aero-elastic code FAST for the NREL 5 MW reference turbine, where it shows a stable behaviour in turbulent wind simulations.