Toroidally-wound permanent magnet machines in high-speed applications

A. Borisavljevic, S. Jumayev, E. Lomonova

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

9 Citations (Scopus)
200 Downloads (Pure)


The paper studies potentials and limits of permanent magnet machines with toroidal windings in high speed applications. Three designs in different applications are used as test cases. The analyses based on analytical and FE models illustrate both merits and weaknesses of toroidally-wound machines that have not been addressed in literature. Strong external leakage of the armature field leads to relatively high inductance for a slotless machine and, yet, to susceptibility to losses in the housing. Losses in copper are, arguably, the decisive factor for suitability of this type of machine for a particular application; in particular, the machine is hardly suitable to applications requiring high power density. The paper finally demonstrates the importance of having a flawless winding process in order to avoid excessive core losses.
Original languageEnglish
Title of host publicationProceedings of the 2014 International Conference on Electrical Machines (ICEM), 2-5 September 2014, Berlin, Germany
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
ISBN (Print)978-1-4799-4389-0
Publication statusPublished - 2014
Eventconference; International Conference on Electrical Machines (ICEM); 2014-09-02; 2014-09-05 -
Duration: 2 Sep 20145 Sep 2014


Conferenceconference; International Conference on Electrical Machines (ICEM); 2014-09-02; 2014-09-05
OtherInternational Conference on Electrical Machines (ICEM)


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