Amélioration des Performances d’un Variateur de Vitesse Contrôlé par la Méthode à Flux Orienté
Abstract
The present work is an attempt to improve the efficiency and the robustness of vector controlled induction motor drives. In fact, the efficiency of these latter, decrease for two main raisons: rotor resistance variation and light load operating; if the flux level is maintained constant. For this reason, a method is suggested to select the optimal flux which leads to minimum power loss. In another hand, to address the effect of the rotor resistance variation, a fuzzy logic-based mechanism is proposed to maintain the decoupling and avoiding consequently extra power loss. The last part of this thesis is dedicated to robustness improvement by eliminating the weakest part in the drive which is the speed sensor. The extended Kalman filter has been chosen for its ability to deal with nosy systems such as harmonics generated by inverters. In order to compensate for the effect of iron loss, a mechanism has been suggested to improve the estimation accuracy without accept extra calculations. The obtained results witness the effectiveness of the suggested methods.Suggested Citation
Aissa Kheldoun. "Amélioration des Performances d’un Variateur de Vitesse Contrôlé par la Méthode à Flux Orienté" (- ed). Ed. lreei- Laboratoire de Recherche sur l’Electrification des Entreprises Industrielles. Boumerdès: Université de Boumerdès, 2007.
Available at: http://works.bepress.com/boukhemis_chetate/54