Approximate analysis of transient heat conduction in an induction motor during reactor starting

Author

Sarkar, D. ; Naskar, A.K.

Author_Institution

Dept. of Electr. Eng., Bengal Eng. & Sci. Univ., Howrah, India

fYear

2011

fDate

28-30 Jan. 2011

Firstpage

1

Lastpage

8

Abstract

Induction machines transient thermal analysis has been a subject of interest for machine designers in their effort to improve machine reliability. The stator being static is prone to high temperature and the study of transient thermal behaviour in the stator is useful to identify causes of failure in induction machines. The paper presents a two-dimensional transient heat flow in the stator of an induction motor using arch shaped elements in the r-θ plane of the cylindrical co-ordinate system. The model is applied to one squirrel cage TEFC machine of 7.5 kW. Finally the temperatures obtained by this two-dimensional approximation have been compared for different stator currents considering the time required for each stator current during the transient in reactor starting.

Keywords

approximation theory; heat conduction; squirrel cage motors; stators; thermal analysis; approximate analysis; arch shaped elements; cylindrical coordinate system; induction machines transient thermal analysis; induction motor; machine reliability; power 7.5 kW; reactor starting; squirrel cage TEFC machine; stator currents; transient heat conduction; two-dimensional transient heat flow; Finite element methods; Heating; Induction motors; Inductors; Stator windings; Transient analysis; Design performance; Finite element methods; Induction motor; Insulation; Temperature rise; Thermal analysis; Transients;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics (IICPE), 2010 India International Conference on

Conference_Location

New Delhi

Print_ISBN

978-1-4244-7883-5

Type

conf

DOI

10.1109/IICPE.2011.5728058

Filename

5728058