Analysis of the end winding heat transfer variation with altitude in electric motors

Gareth Gilson, S. J. Pickering, D. B. Hann, C. Gerada

Research output: Contribution to conferencePaperpeer-review

7 Citations (Scopus)

Abstract

This paper considers the determination of heat transfer coefficients on the end windings of an electric machine. The correct determination of these coefficients is of importance since they are regularly used in the thermal analysis electric machines. The heat transfer equations for the end windings given in the literature are generally not expressed as correlations of non-dimensional parameters and so do not allow for changes in operating conditions such as the variation in pressure with altitude that is found in electric machines operating in aircraft. A simple correction is proposed to allow for changes in end winding heat transfer with altitude. This may be implemented in software packages such as MotorCAD - for calculating the thermal performance of electric machines.

Original languageEnglish
Pages2545-2550
Number of pages6
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event35th Annual Conference of the IEEE Industrial Electronics Society, IECON 2009 - Porto, Portugal
Duration: 3 Nov 20095 Nov 2009

Conference

Conference35th Annual Conference of the IEEE Industrial Electronics Society, IECON 2009
Country/TerritoryPortugal
CityPorto
Period3/11/095/11/09

Keywords

  • Altitude
  • Electric aircraft
  • Electric motors
  • Heat transfer coefficient
  • Natural and forced convection
  • Thermal analysis

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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