Stator-Winding Thermal Models for Short-Time Thermal Transients: Definition and Validation

In this paper, four thermal models for the stator-winding temperature prediction in short-time thermal transient are presented and experimentally validated. The lumped-parameter networks, based on physical representation of the stator components, are composed of multiple RC cells in cascade. In part...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2016-05, Vol.63 (5), p.2713-2721
Main Authors: Boglietti, Aldo, Carpaneto, Enrico, Cossale, Marco, Vaschetto, Silvio
Format: Article
Language:English
Subjects:
Electrical machine thermal model
Evolution
Induction motors
Mathematical analysis
Mathematical models
Networks
Stator windings
Stators
Temperature measurement
Thermal analysis
Thermal conductivity
thermal lumped-parameters
Thermal resistance
thermal transient
Thermal transients
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Summary:In this paper, four thermal models for the stator-winding temperature prediction in short-time thermal transient are presented and experimentally validated. The lumped-parameter networks, based on physical representation of the stator components, are composed of multiple RC cells in cascade. In particular, starting from a fourth-order thermal network, the model complexity is progressively reduced to a third-, second-, and then down to a first-order system. The proposed models and their predicted temperature evolutions are discussed in detail and validated by means of a full experimental approach on an industrial 7.5-kW induction motor. Finally, the behaviors of the proposed thermal models are corroborated by some considerations drawn by the analytical solution of the models.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2015.2511170