Extended Kalman filter for uninterruptible power supplies applied to non linear loads

Issue title: Proceedings of the twelfth International Symposium on Interdisciplinary Electromagnetic, Mechanic and Biomedical Problems, ISEM Bad Gastein

Article type: Research Article

Authors: Zerouali, Sakina^{a; *} | Allag, Abdelkrim^a | Mimoune, Souri Mohamed^a | Srairi, Kamel^a | Hamida, Amel Hadri^a | Féliachi, Mouloud^b

Affiliations: [a] MSE Laboratry, University of Biskra, BP. 145, 07000 Biskra, Algeria | [b] IREENA, LRTI, CRTT, Bd de l'Université, BP. 406, 44602 Saint-Nazaire Cedex, France

Correspondence: [*] Corresponding author. Tel.: +213 33 74 91 54; Fax: +213 33 74 27 33; E-mail: sakina_z@yahoo.fr

Abstract: An extended Kalman filter and a discrete time adaptive linear quadratic regulator for uninterruptible power supplies are presented. On the control strategy design, the gains are determined by minimizing a cost function which reduces the tracking error and the control signal. An extended Kalman filter identifies and estimates the plant parameters and the unmeasured state variables respectively at different load conditions.

Keywords: UPS systems, adaptive control, extended Kalman filter, non-linear loads

DOI: 10.3233/JAE-2007-791

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 25, no. 1-4, pp. 565-569, 2007