Analysis of Temperature Distribution in the Stator of Large Synchronous Machines Considering Heat Conduction and Heat Convection

Author

Schrittwieser, Maximilian ; Biro, Oszkar ; Farnleitner, Ernst ; Kastner, Gebhard

Author_Institution

Christian Doppler Lab. for Multiphysical Simulation, Graz Univ. of Technol., Graz, Austria

Volume

51

Issue

3

fYear

2015

fDate

Mar-15

Firstpage

1

Lastpage

4

Abstract

The aim of this paper is the characterization of the convective heat transfer and its treatment in a 3-D model to calculate the heat transfer and related temperature distribution in large synchronous machines. The wall heat transfer coefficients in the ventilation ducts have been correlated to various design parameters by several computational fluid dynamics simulations and have been defined at the boundaries at the tooth and yoke iron in the numerical model. The losses have been determined in the copper bars and stator iron from electromagnetic calculations. The validation has been made for the stator temperatures with the established conjugate heat transfer method.

Keywords

computational fluid dynamics; convection; heat conduction; numerical analysis; stators; synchronous machines; temperature distribution; 3D model; CFD simulations; computational fluid dynamics simulations; conjugate heat transfer method; copper bars; design parameters; electromagnetic calculations; heat conduction; heat convection; numerical model; stator iron; stator temperatures; synchronous machines; temperature distribution; tooth iron; ventilation ducts; yoke iron; Computational modeling; Ducts; Heat transfer; Iron; Mathematical model; Numerical models; Solid modeling; Cooling; electric machines; stators; thermal analysis;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2357452

Filename

7093562