Unbalanced magnetic pull in fractional-slot brushless PM motors

David G. Dorrell, Mircea Popescu, Calum Cossar, Dan Ionel

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

24 Scopus citations

Abstract

This paper reports on an investigation into the unbalanced magnetic pull in brushless PM motors due to either magnetic asymmetry or rotor eccentricity. Several machines are investigated. These have different slot and pole number combinations. Some of the windings contain sub-harmonics and these are found to be more susceptible to UMP when there is rotor eccentricity and also to produce vibrating UMP. Consequent rotor poles are also found to produce high UMP under rotor eccentricity conditions.

Original languageEnglish
Title of host publication2008 IEEE Industry Applications Society Annual Meeting, IAS'08
DOIs
StatePublished - 2008
Event2008 IEEE Industry Applications Society Annual Meeting, IAS'08 - Edmonton, AB, Canada
Duration: Oct 5 2008Oct 9 2008

Publication series

NameConference Record - IAS Annual Meeting (IEEE Industry Applications Society)
ISSN (Print)0197-2618

Conference

Conference2008 IEEE Industry Applications Society Annual Meeting, IAS'08
Country/TerritoryCanada
CityEdmonton, AB
Period10/5/0810/9/08

Keywords

  • Brushless permanent magnet motors
  • Fractional slot
  • Unbalanced magnetic pull

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

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