Thermal Performance of an open slot modular wound machine with external rotor

Rafal Wrobel, Phil Mellor, Neville McNeill

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

This paper describes the thermal analysis of an external-rotor brushless permanent-magnet motor used in a traction application. The machine has a nonstandard open-slot stator lamination and is wound with a single-layer concentrated ``modular'' winding. This structure potentially has several heat transfer advantages compared to the more traditional double-layer concentrated winding. An analytical lumped-parameter thermal model has been developed for the machine to gain an understanding of the main cooling mechanisms and to investigate the potential heat transfer advantages. The thermal advantage of the modular winding over the more conventional 1.5-slot-per-pole design is presented. Results from the developed thermal model have been validated experimentally on a prototype wheel hub motor.
LanguageEnglish
Pages403-411
Number of pages9
JournalIEEE Transactions on Energy Conversion
Volume25
Issue number2
DOIs
Publication statusPublished - 20 May 2010

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Rotors
Heat transfer
Thermoanalysis
Stators
Permanent magnets
Poles
Wheels
Cooling
Hot Temperature

Keywords

  • Modular winding
  • thermal model
  • brushless permanent-magnet motor
  • heat transfer

Cite this

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Thermal Performance of an open slot modular wound machine with external rotor. / Wrobel, Rafal; Mellor, Phil; McNeill, Neville.

In: IEEE Transactions on Energy Conversion , Vol. 25, No. 2, 20.05.2010, p. 403-411.

Research output: Contribution to journalArticle

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