Title :
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
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2014.2357452
