Use of 3–dimensional finite elements for computation of temperature distribution in the Stator of an Induction Motor during Direct-On-Line Starting

  • Nirmal Kr. Bhattacharya Dept. of Physics, Jadavpur University
  • Ashok Kr. Naskar Department of Electrical Engineering, Techno India-Batanagar
  • Debasis Sarkar EE Department, IIEST Shibpur

Abstract

Transient thermal analysis of induction machines is a subject of interest for machine designers in their effort to improvemachine reliability. Since the stator is static, it is prone to overheating. Therefore, the study of transient thermal behaviorin the stator is useful to identify causes of failure in induction machines. This paper presents a three-dimensional transientheat flow through the stator of an induction motor using arch shaped elements in the r--z plane of the cylindrical co-ordinatesystem. A temperature-time method is employed to evaluate the distribution of loss in various parts of the machine. Usingthese loss distributions as an input for finite-element analysis, more accurate temperature distributions can be obtained.The model is applied to one squirrel cage Totally Enclosed Fan Cooled (TEFC) machine of 7.5 kW. Finally, the temperaturesobtained by this three-dimensional approximation at different locations of the stator were compared for different stator currentsconsidering the time required for each stator current during the transient in Direct-On-Line starting.

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Published
2016-09-17
How to Cite
BHATTACHARYA, Nirmal Kr.; NASKAR, Ashok Kr.; SARKAR, Debasis. Use of 3–dimensional finite elements for computation of temperature distribution in the Stator of an Induction Motor during Direct-On-Line Starting. Journal of Power Technologies, [S.l.], v. 97, n. 4, p. 347–353, sep. 2016. ISSN 2083-4195. Available at: <https://papers.itc.pw.edu.pl/index.php/JPT/article/view/903>. Date accessed: 05 aug. 2021.
Section
Electrical Engineering

Keywords

FEM, Induction Motor, Thermal Analysis, Transients, Design Performance

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