Analysis of the bearingless AC homopolar motor

Eric Severson, Robert Nilssen, Tore Undeland, Ned Mohan

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

15 Scopus citations

Abstract

The bearingless ac homopolar motor has numerous advantages over classical machines for applications such as flywheel energy storage and as a superconducting machine. In this paper, the bearingless ac homopolar motor is analyzed. Inductance matrices, alignment and reluctance torque calculations, suspension winding configurations, and radial suspension force calculations are presented for two rotor structures. Unlike previous literature, expressions for torque interference caused by suspension force winding configurations and effects of d-axis flux on suspension forces are developed and presented. Furthermore, it is demonstrated that each rotor structure can be analyzed as an equivalent classical machine to allow for easy comparison.

Original languageEnglish (US)
Title of host publicationProceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012
Pages570-576
Number of pages7
DOIs
StatePublished - 2012
Event2012 20th International Conference on Electrical Machines, ICEM 2012 - Marseille, France
Duration: Sep 2 2012Sep 5 2012

Publication series

NameProceedings - 2012 20th International Conference on Electrical Machines, ICEM 2012

Other

Other2012 20th International Conference on Electrical Machines, ICEM 2012
Country/TerritoryFrance
CityMarseille
Period9/2/129/5/12

Keywords

  • ac homopolar motor
  • active magnetic bearing
  • flywheel energy storage
  • superconducting machine

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