A Review of Thermal Analysis and Management of Power Dense Electric Machines

Fnu Nishanth, Martin Johnson, Eric L. Severson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Scopus citations

Abstract

Power dense electric machines are highly desirable for applications such as electrified transportation systems. One of the factors limiting the achievable power density of electric machines is the thermal management system. In the absence of suitable thermal management systems, the electric machine losses can lead to insulation failure, inter-turn short circuits, de-magnetization of the permanent magnets, and finally drive system failure. Therefore, analyzing the losses in the machine and identifying a suitable thermal management system is essential to realize power dense electric machines. In this paper, thermal analysis techniques applied to electric machines are first reviewed, and their relative merits and demerits are identified. The thermal considerations in electric machine design are discussed. Once the electric machine is thermally analyzed, the next step is to identify or design a suitable thermal management system. The subsequent sections of this paper provide a detailed review of thermal management systems reported in literature for cooling electric machines, with a focus on high power density designs across different application scenarios. Finally, an analysis is presented that demonstrates how the physics of the machine can be used to determine the stator current density limits.

Original languageEnglish (US)
Title of host publication2021 IEEE International Electric Machines and Drives Conference, IEMDC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665405102
DOIs
StatePublished - May 17 2021
Externally publishedYes
Event2021 IEEE International Electric Machines and Drives Conference, IEMDC 2021 - Hartford, United States
Duration: May 17 2021May 20 2021

Publication series

Name2021 IEEE International Electric Machines and Drives Conference, IEMDC 2021

Conference

Conference2021 IEEE International Electric Machines and Drives Conference, IEMDC 2021
Country/TerritoryUnited States
CityHartford
Period5/17/215/20/21

Bibliographical note

Publisher Copyright:
© 2021 IEEE.

Keywords

  • Thermal analysis
  • current density
  • electric machines
  • thermal management systems
  • thermal modeling

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