Name
Title | ||
|---|---|---|
Evaluation of Impregnation Materials for Thermal Management of Liquid-Cooled Electric Machines |
Abstract | ||
|---|---|---|
In this paper, the thermal impact of using different impregnation materials on high-performance liquid-cooled electric machines is studied. In this regard, varnish, Epoxylite, and a silicone-based thermally conductive material are considered. To study thermal effects of using different impregnation materials in theory, an advanced lumped-parameter thermal model of the studied electric machines is developed. In addition to the simulation studies, three identical induction machines using the aforementioned materials are manufactured and evaluated. Experimental tests are carried out at a wide range of current magnitudes and cooling conditions. A good agreement between the temperature measurements and corresponding simulation results is observed. It is demonstrated that using innovative thermally conductive materials in the stator slots and the end winding bodies of liquid-cooled electric machines results in a significant reduction in the winding hot spot temperature. Additionally, the influence of the critical parameters on the impregnation material performance, e.g., impregnation goodness and slot fill factor, is studied. |
Year | DOI | Venue |
|---|---|---|
2014 | 10.1109/TIE.2014.2308151 | Industrial Electronics, IEEE Transactions |
Keywords | Field | DocType |
asynchronous machines,electric machines,silicones,stators,temperature measurement,varnish,cooling conditions,current magnitudes,end winding body,epoxylite,high-performance liquid-cooled electric machines,impregnation materials,induction machines,lumped-parameter thermal model,silicone,stator slots,temperature measurements,thermal impact,thermal management,thermally conductive material,varnish,winding hot spot temperature,Computational fluid dynamics,Epoxylite,direct oil cooling,hybrid electric vehicle (HEV),impregnation material,induction machines,lumped parameter (LP) thermal model,silicone-based thermally conductive material (SbTCM),vacuum impregnation,varnish | Hot spot (veterinary medicine),Thermal,Varnish,Heat transfer,Mechanical engineering,Silicone,Electromagnetic coil,Engineering,Stator,Temperature measurement | Journal |
Volume | Issue | ISSN |
61 | 11 | 0278-0046 |
Citations | PageRank | References |
1 | 0.38 | 7 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Shafigh Nategh | 1 | 2 | 0.75 |
| Andreas Krings | 2 | 4 | 0.93 |
| O. Wallmark | 3 | 68 | 16.22 |
| Mats Leksell | 4 | 2 | 0.76 |