Axial-flux PM synchronous machines with air-gap profiling and very high ratio of spoke rotor poles to stator concentrated coils

Vandana Rallabandi, Narges Taran, Dan M. Ionel, Ion G. Boldea

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

7 Scopus citations

Abstract

Permanent magnet machines including a magnetic gearing effect are attractive for low-speed high-Torque applications. This paper proposes a dual-stator axial-flux machine topology with a high ratio for the number of rotor poles to concentrated stator coils. The stator consists of a relatively small number of teeth, with each tooth including multiple smaller/auxiliary teeth. The rotor employs spoke-Type permanent magnets, which result in high flux concentration, thereby further improving the torque density. The paper discusses the principle of operation of the proposed machine topology. Finite element results on example designs with 6 stator teeth, each having 2 and 3 auxiliary teeth, and with 20, 32, and 34 rotor poles are presented, respectively. Other feasible slot-pole combinations are also identified.

Original languageEnglish
Title of host publication2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017
ISBN (Electronic)9781509042814
DOIs
StatePublished - Aug 3 2017
Event2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017 - Miami, United States
Duration: May 21 2017May 24 2017

Publication series

Name2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017

Conference

Conference2017 IEEE International Electric Machines and Drives Conference, IEMDC 2017
Country/TerritoryUnited States
CityMiami
Period5/21/175/24/17

Bibliographical note

Publisher Copyright:
© 2017 IEEE.

Keywords

  • Permanent magnet machines
  • Vernier electric machines
  • axial flux
  • electro-magnetic FEA
  • high-Torque low-speed machines
  • special electric motors
  • spoke permanent magnets

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Mechanical Engineering

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