On Singular Perturbations of Flexible and Variable-Speed Wind Turbines

On Singular Perturbations of Flexible and Variable-Speed Wind Turbines

A model for the mechanical dynamics of a wind turbine is developed, which is the composition of three physical mechanisms: flexion, torsion, and rotational dynamics. A first contribution is the identification of the essential physical parameters that provide a time-scale separation of these three me...

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Main Authors: R. Oulad Ben Zarouala, C. Vivas, J. Á. Acosta, L. El Bakkali
Format: Article
Language:English
Published: Hindawi Limited 2012-01-01
Series:International Journal of Aerospace Engineering
Online Access:http://dx.doi.org/10.1155/2012/860510
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spelling doaj-ead098294aea4949874fc34ae2ce28a52020-11-24T23:05:13ZengHindawi LimitedInternational Journal of Aerospace Engineering1687-59661687-59742012-01-01201210.1155/2012/860510860510On Singular Perturbations of Flexible and Variable-Speed Wind TurbinesR. Oulad Ben Zarouala0C. Vivas1J. Á. Acosta2L. El Bakkali3Departamento de Ingeniería de Sistemas y Automática, Universidad de Sevilla, Camino de los Descubrimientos s/n, 41092 Sevilla, SpainDepartamento de Ingeniería de Sistemas y Automática, Universidad de Sevilla, Camino de los Descubrimientos s/n, 41092 Sevilla, SpainDepartamento de Ingeniería de Sistemas y Automática, Universidad de Sevilla, Camino de los Descubrimientos s/n, 41092 Sevilla, SpainTeam Modelling and Simulation of Mechanical Systems, Faculty of Sciences at Tetouan, University Abdelmalek Essaadi, BP 2121, M’Hannech, 93002 Tetouan, MoroccoA model for the mechanical dynamics of a wind turbine is developed, which is the composition of three physical mechanisms: flexion, torsion, and rotational dynamics. A first contribution is the identification of the essential physical parameters that provide a time-scale separation of these three mechanisms. Under the assumption of singular perturbations the time-scale separation allows to work with a reduced model of order one. This reduction has been essential for the control of this system allowing to control designers to take into account only the reduced-order model. A second contribution consists in employing a measurement of the fore-aft nacelle acceleration with the reduced model, together with a Kalman filter to estimate the flexible DOFs of the system (tower and average blade deflection). The successful approach is tested on high-order nonlinear aeroelastic simulator (FAST).http://dx.doi.org/10.1155/2012/860510
collection DOAJ
language English
format Article
sources DOAJ
author R. Oulad Ben Zarouala
C. Vivas
J. Á. Acosta
L. El Bakkali
spellingShingle R. Oulad Ben Zarouala
C. Vivas
J. Á. Acosta
L. El Bakkali
On Singular Perturbations of Flexible and Variable-Speed Wind Turbines
International Journal of Aerospace Engineering
author_facet R. Oulad Ben Zarouala
C. Vivas
J. Á. Acosta
L. El Bakkali
author_sort R. Oulad Ben Zarouala
title On Singular Perturbations of Flexible and Variable-Speed Wind Turbines
title_short On Singular Perturbations of Flexible and Variable-Speed Wind Turbines
title_full On Singular Perturbations of Flexible and Variable-Speed Wind Turbines
title_fullStr On Singular Perturbations of Flexible and Variable-Speed Wind Turbines
title_full_unstemmed On Singular Perturbations of Flexible and Variable-Speed Wind Turbines
title_sort on singular perturbations of flexible and variable-speed wind turbines
publisher Hindawi Limited
series International Journal of Aerospace Engineering
issn 1687-5966
1687-5974
publishDate 2012-01-01
description A model for the mechanical dynamics of a wind turbine is developed, which is the composition of three physical mechanisms: flexion, torsion, and rotational dynamics. A first contribution is the identification of the essential physical parameters that provide a time-scale separation of these three mechanisms. Under the assumption of singular perturbations the time-scale separation allows to work with a reduced model of order one. This reduction has been essential for the control of this system allowing to control designers to take into account only the reduced-order model. A second contribution consists in employing a measurement of the fore-aft nacelle acceleration with the reduced model, together with a Kalman filter to estimate the flexible DOFs of the system (tower and average blade deflection). The successful approach is tested on high-order nonlinear aeroelastic simulator (FAST).
url http://dx.doi.org/10.1155/2012/860510
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AT cvivas onsingularperturbationsofflexibleandvariablespeedwindturbines
AT jaacosta onsingularperturbationsofflexibleandvariablespeedwindturbines
AT lelbakkali onsingularperturbationsofflexibleandvariablespeedwindturbines
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