Open AccessExperimental Study on the Improvement of the Thermal Behavior of Electric Motors
Author(s) -
Mohamed Rabie Guéchi,
Philippe Désévaux,
Philippe Baucour,
Christophe Espanet,
Raphael Brunel,
M Poirot
Publication year - 2015
Publication title -
international journal of thermal and environmental engineering
Language(s) - English
Resource type - Journals
ISSN - 1923-7316
DOI - 10.5383/ijtee.09.02.006
Subject(s) - electromagnetic coil , stator , materials science , electric motor , traction motor , thermal , mechanical engineering , traction (geology) , air cooling , mechanics , electrical engineering , engineering , thermodynamics , physics
The objective of this work is the improvement of the heat dissipation and the cooling of electric motors intended for the traction of vehicles. Two ways of improvement are proposed. The first one consists in replacing the air surrounding the stator windings by resins of higher thermal conductivity. The second way consists in using the spray cooling technique to cool the hottest parts of electric motor, i.e. coil windings. The two solutions are tested independently and simultaneously. Results show that filling the coil windings with resin enables better heat dissipation in the case of basic cooling by free air convection. On the contrary, the lowest temperatures are obtained with traditional coil winding without resin and by using spray cooling. In that case, the liquid part of the spray may infiltrate inside the coil and the evaporation takes place at the hottest point.