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Design and operation of a thermal harshness test facility for electric motors in hermetic environments.

Number: pap. n. 353

Author(s) : LAWRENCE N., ELBEL S.

Summary

This paper discusses the design of a test rig used to simulate thermal cycling of drive motor components immersed in transmission fluid used in hybrid electric vehicles. Unique challenges are encountered in this thermal test due the extreme change in viscosity of the fluid between high and low temperature (150°C and -20°C, respectively) as well as the need to simulate powering of the components while undergoing cycling. Addressing the unique challenges requires specific attention to refrigeration system design and control, heat exchanger selection and configuration, fluid pump selection and control, and electrical powering of the motor components. The paper provides details of the test rig and discusses the challenges encountered and specific solutions implemented, with the objective of providing a useful insight for the design of other test rigs for temperature cycling with high-viscosity fluids, especially for the testing of hybrid electric vehicle components.

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Pages: 8

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Details

  • Original title: Design and operation of a thermal harshness test facility for electric motors in hermetic environments.
  • Record ID : 30025986
  • Languages: English
  • Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
  • Publication date: 2019/08/24
  • DOI: http://dx.doi.org/10.18462/iir.icr.2019.0353

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