Article
On singular perturbations of flexible and variable-speed wind turbines
Author/s | Oulad Ben Zarouala, R.
Vivas Venegas, Carlos Acosta Rodríguez, José Ángel El bakkali, L. |
Department | Universidad de Sevilla. Departamento de Ingeniería de Sistemas y Automática |
Publication Date | 2012 |
Deposit Date | 2017-04-10 |
Published in |
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Abstract | 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 ... 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). |
Citation | Oulad Ben Zarouala, R., Vivas Venegas, C., Acosta Rodríguez, J.Á. y El bakkali, L. (2012). On singular perturbations of flexible and variable-speed wind turbines. International journal of aerospace engineering, 2012 |
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