Aeroelastic Control of a Wind Turbine Blade Using Microtabs Based on UA97W300-10 Airfoil. Issue 5 (October 2013)

• Record Type: Journal Article
• Authors: Li, N.; Balas, M. J.
• Is Part Of: Wind engineering. Volume 37:Issue 5(2013)
• Page Start: 501
• Page End: 516
• Publication Date: 2013-10
• Subjects: Wind-pressure -- Periodicals; Winds -- Periodicals; Wind power -- Periodicals; Engineering meteorology -- Periodicals; Pression du vent; Vents; Énergie éolienne; Météorologie appliquée; Engineering meteorology; Wind power; Wind-pressure; Winds; Periodicals; 621.4505
• DOI: 10.1260/0309-524X.37.5.501
• Languages: English
• ISSNs: 0309-524X

Abstract

The unsteady flow over a rotating wind turbine blade is described by the Beddoes-Leishman dynamic stall model. Based on the asymmetric airfoil UA97W300-10, a wind turbine blade section with unsteady aerodynamic loads is modeled as an aeroelastic system for this vibration suppression study. Aeroelastic stability of the system is analyzed by open-loop tests to identify the flutter speed. With consideration of wind turbine operations, control strategies for flutter suppression are made separately in each operation region and implemented by a designed Adaptive Controller using microtab devices, which are positioned at the trailing edge of the airfoil with deployment at the maximum height of 5% of chord length. The control effects of the Adaptive Control and microtabs are investigated by closed-loop tests. The stability of the Adaptive Controller is proved using a new Adaptive Stability Theorem, which is also illustrated by examples.