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:
-
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- 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. https://doi.org/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. https://doi.org/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 = {Tue May 08 00:00:00 EDT 2018},
month = {Tue May 08 00:00:00 EDT 2018}
}
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