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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:
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. https://www.osti.gov/servlets/purl/1437928.
@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 = {2018},
month = {5}
}

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Works referenced in this record:

Solving the More Difficult Aspects of Electric Motor Thermal Analysis in Small and Medium Size Industrial Induction Motors
journal, September 2005

  • Staton, D.; Boglietti, A.; Cavagnino, A.
  • IEEE Transactions on Energy Conversion, Vol. 20, Issue 3
  • DOI: 10.1109/TEC.2005.847979

Experimental Investigation of Contact Resistance for Water Cooled Jacket for Electric Motors and Generators
journal, March 2012

  • Kulkarni, Devdatta P.; Rupertus, Gabriel; Chen, Edward
  • IEEE Transactions on Energy Conversion, Vol. 27, Issue 1
  • DOI: 10.1109/TEC.2011.2177465

Modern Heat Extraction Systems for Power Traction Machines—A Review
journal, May 2016

  • Popescu, Mircea; Staton, David Alan; Boglietti, Aldo
  • IEEE Transactions on Industry Applications, Vol. 52, Issue 3
  • DOI: 10.1109/TIA.2016.2518132

Thermal contact conductance; theoretical considerations
journal, February 1974


An Approximate Thermal Contact Conductance Correlation
journal, March 1993

  • Antonetti, V. W.; Whittle, T. D.; Simons, R. E.
  • Journal of Electronic Packaging, Vol. 115, Issue 1
  • DOI: 10.1115/1.2909293

Thermal interface materials for power electronics applications
conference, May 2008

  • Narumanchi, Sreekant; Mihalic, Mark; Kelly, Kenneth
  • 2008 11th IEEE Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems (I-THERM), 2008 11th Intersociety Conference on Thermal and Thermomechanical Phenomena in Electronic Systems
  • DOI: 10.1109/ITHERM.2008.4544297