DIAGNOSTIC DES DEFAUTS MECANIQUES ETELECTROMAGNETIQUES SUR LES AEROGENERATEURS ÀBASE DE MACHINE ASYNCHRONE À DOUBLE ALIMENTATION

Type : Thèse de doctorat
Auteur(s) :  Hichem MERABET
Directeurs du mémoire/thèse :  -
Année :  2016
Domaine : Electrotechnique
Etablissement :  Université Badji Mokhtar de Annaba
Résumé en PDF :  (résumé en pdf)
Fulltext en PDF :  (.pdf)
Mots clés :  défauts mécaniques, électromagnétique, aérogénérateurs, GADA, modélisations

Résumé :

The use of doubly-fed induction machine in wind conversion systems occupies a verysignificant place. Therefore, the diagnosis of potential faults in these machines is nowadays a majorpriority for the industrialists in particular and for the scientists in general.Currently, the requirements of renewable energy, in terms of wind conversion system, is growingup due to the availability of the industrial processes became an economic argument than a meremarketing. However, the monitoring and the diagnosis require at the same time a better functionaland behavioral knowledge of the system in order to highlight, in an early stage, the conditionsleading to a failure situation.In this thesis, we are interested of the fault of the doubly-fed induction machine. Firstly, we willdevelop the doubly-fed induction machine model that can to represent the machine behavior invarious function modes and structural imbalances. Among the faults, the fault of static, dynamic andmixed eccentricity, and the phases openings faults, and the stator or rotor inter-turns short-circuit areconsidered.A spectral analysis of stator currents of the doubly-fed induction machine taken at the time ofthese faults will be presented subsequently.In the last part, we will develop an approach of monitoring allowing to obtain information on themachine state, the detection and the localization of the faults.