Abstract
This chapter is dedicated to the consideration of the possibility of building a
thermal computer model of an induction electric machine with a squirrel-cage rotor.
The thermal model is considered as an add-on to the computer model that describes
electrical and mechanical phenomena of the IM. Both models are included in a single
OrCAD project. The structure and components of the developed thermal model are
described. The thermal processes modeling results in an induction motor type NVA-55
as part of an auxiliary electric drive of a freight electrical locomotive are presented taking into account the unbalanced supply voltages and squirrel-cage defects.
Keywords: Auxiliary induction motor, Electrical locomotive, Thermal processes, Unbalanced supply voltages, Squirrel-cage defects.
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