Comparison between three iron-powder topologies of electrically magnetized synchronous machines

D Martinez-Munoz, Avo Reinap, Mats Alaküla

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingResearchpeer-review


The finite element method has been used to analyse three topologies of iron-powder electrically magnetized synchronous machines. The first topology has the field winding placed in magnetically conducting end-plates, eliminating the need of slip-rings. In the second topology this is achieved by placing the winding above the outer rotor, and the third topology corresponds to the more conventional design with the field coils in the rotor. The results show that the first topology outputs 60% more torque than the other designs, although the three topologies present similar characteristics with regard to torque density
Original languageEnglish
Title of host publicationRecent Developments of Electrical Drives. Best papers from the International Conference on Electrical Machines ICEM’04
ISBN (Print)978-1-4020-4534-9
Publication statusPublished - 2006
EventInternational Conference on Electrical Machines, 2004 - Cracow, Poland
Duration: 2004 Sep 52004 Sep 8
Conference number: 16th


ConferenceInternational Conference on Electrical Machines, 2004
Abbreviated titleICEM04

Subject classification (UKÄ)

  • Other Electrical Engineering, Electronic Engineering, Information Engineering


  • field coils
  • outer rotor
  • torque density
  • field winding
  • finite element method
  • iron-powder topologies
  • electrically magnetized synchronous machines


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