Design of Bearingless Permanent Magnet Motors Using No Voltage Combined Windings

Jiahao Chen, Ashad Farhan, Martin Johnson, Eric L. Severson

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

2 Scopus citations

Abstract

Bearingless motors have zero mechanical loss and no-contact operation, making them a compelling technology for high speed, high reliability applications, such as industrial compressors. However, currently published demonstrations of bearingless motors have been limited to low power levels (≤ 30 kW). This paper investigates the use of a “no voltage" combined motor winding to overcome performance challenges and enable the development of a medium power, high speed bearingless permanent magnet synchronous motor (BPMSM). An optimization framework is developed and used to explore the design space for several designs with different slot and pole numbers. It is shown that candidate designs achieve > 95% efficiency while requiring < 5% of the slot space for suspension current.

Original languageEnglish (US)
Title of host publicationIET Conference Proceedings
PublisherInstitution of Engineering and Technology
Pages803-808
Number of pages6
Volume2020
Edition7
ISBN (Electronic)9781839533303, 9781839534195, 9781839535062, 9781839535222, 9781839535239, 9781839535246, 9781839535406, 9781839535420, 9781839535635
DOIs
StatePublished - 2020
Externally publishedYes
Event10th International Conference on Power Electronics, Machines and Drives, PEMD 2020 - Virtual, Online
Duration: Dec 15 2020Dec 17 2020

Conference

Conference10th International Conference on Power Electronics, Machines and Drives, PEMD 2020
CityVirtual, Online
Period12/15/2012/17/20

Bibliographical note

Publisher Copyright:
© 2020 IET Conference Proceedings. All rights reserved.

Keywords

  • bearingless motor
  • combined winding
  • high speed motor
  • optimization
  • self-bearing motor

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