A Thermal Model of an Electric Rolling-Mill Machine

This paper presents a thermal model of the armature winding, which incorporates the thermal characteristics of three main armature components in the transient processes—namely, a winding, its insulation, and an armature core. The transfer factors of the insulation gap are experimentally determined....

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Bibliographic Details
Published inRussian electrical engineering Vol. 93; no. 2; pp. 71 - 75
Main Authors Usynin, Yu. S., Grigoriev, M. A.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 2022
Springer Nature B.V
Subjects
Engineering
Graphical representations
Inhomogeneity
Insulation
Machines
Manufacturing
Overloading
Processes
Thermal analysis
Winding
electric motor
rolling-mill
transient processes
thermal model
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Summary:This paper presents a thermal model of the armature winding, which incorporates the thermal characteristics of three main armature components in the transient processes—namely, a winding, its insulation, and an armature core. The transfer factors of the insulation gap are experimentally determined. This enables us to sufficiently accurately describe the change of the insulation overtemperature in the early stage of the transient process. The graphs of permissible overload time of a rolling-mill motor depending on the overload ratio are obtained. Recommendations are made on a load of a rolling-mill motor. They are represented as a graph that takes into account the heating inhomogeneity of different surface areas of the armature-winding section in the transient processes.
ISSN:1068-3712
1934-8010
DOI:10.3103/S1068371222020146