Approximate Analysis Of Transient Heat Conduction In An Induction Motor During Star-Delta Starting

Author

Sarkar, Debasis ; Bhattacharya, N.K.

Author_Institution

Bengal Eng. & Sci. Univ., Howrah

fYear

2006

fDate

15-17 Dec. 2006

Firstpage

1601

Lastpage

1606

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-thetas 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 star delta starting.

Keywords

heat conduction; squirrel cage motors; starting; stators; thermal analysis; 2D approximation; 2D transient heat flow; arch shaped elements; cylindrical co-ordinate system; induction machines; induction motor; power 7.5 kW; r-thetas plane; squirrel cage TEFC machine; star-delta starting; stator; transient heat conduction; transient thermal analysis; Finite element methods; Geometry; Induction machines; Induction motors; Resistance heating; Stators; Temperature; Thermal conductivity; Thermal resistance; Transient analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Technology, 2006. ICIT 2006. IEEE International Conference on

Conference_Location

Mumbai

Print_ISBN

1-4244-0726-5

Electronic_ISBN

1-4244-0726-5

Type

conf

DOI

10.1109/ICIT.2006.372592

Filename

4237914