Efficient aeroservoelastic modeling and control using trailing-edge flaps of wind turbines

Author

Bing Feng Ng ; Hesse, Henrik ; Palacios, Raul ; Kerrigan, Eric C. ; Graham, J. Michael R.

Author_Institution

Dept. of Aeronaut., Imperial Coll. London, London, UK

fYear

2014

fDate

9-11 July 2014

Firstpage

1

Lastpage

6

Abstract

This paper presents a computationally efficient aeroservoelastic modeling approach for dynamic load alleviation in large wind turbines with trailing-edge aerodynamic control surfaces. The aeroelastic model is expressed directly in a state-space formulation and trailing-edge flaps are modeled directly in the unsteady aerodynamics. The linear model of a single rotating blade is used to design a Linear-Quadratic-Gaussian regulator for minimizing the root-bending moments, which is shown to provide load reductions of about 20% in closed-loop on the full wind turbine non-linear aeroelastic model.

Keywords

aerodynamics; aerospace control; closed loop systems; elasticity; linear quadratic Gaussian control; minimisation; nonlinear control systems; state-space methods; wind turbines; aeroservoelastic control; aeroservoelastic modeling; dynamic load alleviation; linear model; linear-quadratic-gaussian regulator; load reductions; nonlinear aeroelastic model; root-bending moment minimization; single rotating blade; state-space formulation; trailing-edge aerodynamic control surfaces; trailing-edge flaps; unsteady aerodynamics; wind turbines; Aerodynamics; Blades; Load modeling; Mathematical model; Poles and towers; Rotors; Wind turbines; Aeroelasticity controls; flaps; vortex panel; wind turbine;

fLanguage

English

Publisher

ieee

Conference_Titel

Control (CONTROL), 2014 UKACC International Conference on

Conference_Location

Loughborough

Type

conf

DOI

10.1109/CONTROL.2014.6915106

Filename

6915106