Open AccessNonlinear Stall Flutter Suppression of Wind Turbine Blade Based on LMI Method
Author(s) -
Xiaolin Zhang,
Haixiang Sun,
Yingbo Wang,
Shanyao Li,
Changle Sun,
Tingrui Liu
Publication year - 2022
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2173/1/012045
Subject(s) - aeroelasticity , flutter , stall (fluid mechanics) , control theory (sociology) , turbine blade , nonlinear system , aerodynamics , linearization , aerodynamic force , airfoil , engineering , turbine , structural engineering , computer science , physics , aerospace engineering , control (management) , quantum mechanics , artificial intelligence
Aiming at the failure of stall flutter in aeroelastic system of wind turbine blade, the active control process of stall flutter based on linear matrix inequality (LMI) design is described. The structural model is a typical blade section model based on spring-mass-damper, and the aerodynamic force is the ONERA stall aerodynamic model suitable for pure pitch motion. Based on the state variables, the nonlinear aeroelastic equations are expanded by Taylor series and linearized by low order approximation. The state feedback gain is calculated through LMI, and the time domain response stability analysis and stall flutter suppression method based on linearization are studied. The simulation results show that the maximum amplitude is greatly reduced after flutter control, and the system can be stabilized in a short time.