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An investigation of the loss distribution in induction motors fed from nonsinusoidal supplies / Nacereddine Benamrouche 

Public ISBD Titre : An investigation of the loss distribution in induction motors fed from nonsinusoidal supplies Type de document : texte imprimé Auteurs : Nacereddine Benamrouche, Auteur ; M. McCormick, Directeur de thèse Editeur : Sheffield : University of Sheffield Année de publication : 1991 Importance : 133 f. Présentation : ill. Format : 30 cm. Note générale : thèse de Doctorat : Électrotechnique : Angleterre, University of Sheffield : 1991 Bibliogr. f. 134 - 143 . Annexe f. 144 - 151 Langues : Anglais (eng) Mots-clés : Losses Induction  motors  fed Nonsinusoidal  supplies Mainstream  models Time-temperature  technique Index. décimale : D001391 Résumé : Many authors have examined the calculation of losses in induction motors fed from nonsinusoidal supplies using lumped circuit models. In published literature considerable controversy still exists as to the efficacy of a perticular model. In this thesis three mainstream models are independently examined in a systematic objective manner and their ability to predict the losses in two 4 KW, 415 V, 3 phase squirrel cage induction motors is assessed. Analysis of experimental and theoretical results confirms that the uncertainties and differences existing are due to the difficulties involved in accurately estimating the different iron loss components. A further weakness of lumped circuit methods is their inability to predict the spacial distribution of losses which is particularly important with respect to the temperature rise. To overcome this deficiency the time-temperature teccnique was examined. In order to carry out this investigation a specialised experimental rig was constructed. The experimental results are discussed and using the well known least-squares interpolation technique temperature and loss density information throughout the volume of the machine was generated. A computer program was developed which allows the information to be presented in colour coded form tomographically. To the best knowledge of the author non such information has hitherto been available. Finally, it should be noted that all aspects of the experimental and theoretical work are appropriately supported by customisied software. An investigation of the loss distribution in induction motors fed from nonsinusoidal supplies [texte imprimé] / Nacereddine Benamrouche, Auteur ; M. McCormick, Directeur de thèse . - Sheffield : University of Sheffield, 1991 . - 133 f. : ill. ; 30 cm. thèse de Doctorat : Électrotechnique : Angleterre, University of Sheffield : 1991 Bibliogr. f. 134 - 143 . Annexe f. 144 - 151 Langues : Anglais (eng) Mots-clés : Losses Induction  motors  fed Nonsinusoidal  supplies Mainstream  models Time-temperature  technique Index. décimale : D001391 Résumé : Many authors have examined the calculation of losses in induction motors fed from nonsinusoidal supplies using lumped circuit models. In published literature considerable controversy still exists as to the efficacy of a perticular model. In this thesis three mainstream models are independently examined in a systematic objective manner and their ability to predict the losses in two 4 KW, 415 V, 3 phase squirrel cage induction motors is assessed. Analysis of experimental and theoretical results confirms that the uncertainties and differences existing are due to the difficulties involved in accurately estimating the different iron loss components. A further weakness of lumped circuit methods is their inability to predict the spacial distribution of losses which is particularly important with respect to the temperature rise. To overcome this deficiency the time-temperature teccnique was examined. In order to carry out this investigation a specialised experimental rig was constructed. The experimental results are discussed and using the well known least-squares interpolation technique temperature and loss density information throughout the volume of the machine was generated. A computer program was developed which allows the information to be presented in colour coded form tomographically. To the best knowledge of the author non such information has hitherto been available. Finally, it should be noted that all aspects of the experimental and theoretical work are appropriately supported by customisied software.

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Code-barres	Cote	Support	Localisation	Section	Disponibilité	Spécialité	Etat_Exemplaire
D001391	D001391	Papier + ressource électronique	Bibliothèque centrale	Thèse de Doctorat	Disponible	Electrotechnique	Consultation sur place/Téléchargeable

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