Thermal modeling of a segmented stator winding design

Rafal Wrobel, Philip Mellor, Derrick Holliday

Research output: Contribution to journalConference Contributionpeer-review

69 Citations (Scopus)


This paper presents a thermal analysis of a segmented stator winding design. As the thermal performance is one of the main factors limiting a machine's output capability, a thermal test on a complete prototype machine is an essential part of the design process. However, for the segmented stator winding design a test-informed thermal analysis on a single stator tooth can be performed prior to the manufacture of the full machine. This approach allows for a rapid and inexpensive assessment of the thermal performance of the complete machine and early identification of design modifications needed. The research has been applied to the design of a highly efficient and compact permanent magnet (PM) traction motor. A thermal model for a single tooth was developed and supported by tests to identify key heat transfer coefficients. A number of winding assemblies were compared and the most promising was selected for the final motor prototype. The results from the approach are compared with thermal test results from the complete machine.
Original languageEnglish
Pages (from-to)2023-2030
Number of pages8
JournalIEEE Transactions on Industry Applications
Issue number5
Publication statusPublished - Sep 2011
EventIEEE Energy Conversion Congress and Exposition (ECCE) - Atlanta, United States
Duration: 12 Sep 201016 Sep 2010


  • iron
  • windings
  • thermal conductivity
  • stator windings
  • stator cores
  • assembly
  • thermal modeling
  • segmented
  • stator winding design


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