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Title: Experimental Characterization and Modeling of Thermal Contact Resistance of Electric Machine Stator-to-Cooling Jacket Interface Under Interference Fit Loading

Abstract

Cooling of electric machines is a key to increasing power density and improving reliability. This paper focuses on the design of a machine using a cooling jacket wrapped around the stator. The thermal contact resistance (TCR) between the electric machine stator and cooling jacket is a significant factor in overall performance and is not well characterized. This interface is typically an interference fit subject to compressive pressure exceeding 5 MPa. An experimental investigation of this interface was carried out using a thermal transmittance setup using pressures between 5 and 10 MPa. Furthermore, the results were compared to currently available models for contact resistance, and one model was adapted for prediction of TCR in future motor designs.

Authors:
 [1];  [1];  [2];  [2];  [2]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. UQM Technologies, Inc., Longmont, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1437928
Report Number(s):
NREL/JA-5400-68042
Journal ID: ISSN 1948-5085
Grant/Contract Number:
AC36-08GO28308
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Thermal Science and Engineering Applications
Additional Journal Information:
Journal Volume: 10; Journal Issue: 4; Journal ID: ISSN 1948-5085
Publisher:
ASME
Country of Publication:
United States
Language:
English
Subject:
30 DIRECT ENERGY CONVERSION; cooling; stators; thermal contact resistance; electric machines; pressure; machinery; lamination; contact resistance; press fits; aluminum; plates (structure); thermal properties

Citation Formats

Cousineau, Justine Emily, Bennion, Kevin S., Chieduko, Victor, Lall, Rajiv, and Gilbert, Alan. Experimental Characterization and Modeling of Thermal Contact Resistance of Electric Machine Stator-to-Cooling Jacket Interface Under Interference Fit Loading. United States: N. p., 2018. Web. doi:10.1115/1.4039459.
Cousineau, Justine Emily, Bennion, Kevin S., Chieduko, Victor, Lall, Rajiv, & Gilbert, Alan. Experimental Characterization and Modeling of Thermal Contact Resistance of Electric Machine Stator-to-Cooling Jacket Interface Under Interference Fit Loading. United States. doi:10.1115/1.4039459.
Cousineau, Justine Emily, Bennion, Kevin S., Chieduko, Victor, Lall, Rajiv, and Gilbert, Alan. Tue . "Experimental Characterization and Modeling of Thermal Contact Resistance of Electric Machine Stator-to-Cooling Jacket Interface Under Interference Fit Loading". United States. doi:10.1115/1.4039459.
@article{osti_1437928,
title = {Experimental Characterization and Modeling of Thermal Contact Resistance of Electric Machine Stator-to-Cooling Jacket Interface Under Interference Fit Loading},
author = {Cousineau, Justine Emily and Bennion, Kevin S. and Chieduko, Victor and Lall, Rajiv and Gilbert, Alan},
abstractNote = {Cooling of electric machines is a key to increasing power density and improving reliability. This paper focuses on the design of a machine using a cooling jacket wrapped around the stator. The thermal contact resistance (TCR) between the electric machine stator and cooling jacket is a significant factor in overall performance and is not well characterized. This interface is typically an interference fit subject to compressive pressure exceeding 5 MPa. An experimental investigation of this interface was carried out using a thermal transmittance setup using pressures between 5 and 10 MPa. Furthermore, the results were compared to currently available models for contact resistance, and one model was adapted for prediction of TCR in future motor designs.},
doi = {10.1115/1.4039459},
journal = {Journal of Thermal Science and Engineering Applications},
number = 4,
volume = 10,
place = {United States},
year = {Tue May 08 00:00:00 EDT 2018},
month = {Tue May 08 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on May 8, 2019
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