A low conductivity composite rotor for fractional pitch concentrated winding machines

JJ Wolmarans, M van der Geest, H Polinder, JA Ferreira, D Zeilstra

    Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

    1 Citation (Scopus)


    Fractional pitch, concentrated winding machines are recently enjoying attention due to their suitability as basis for fault tolerant machine designs. The concentrated nature of the armature current distribution yields significant rotor eddy current loss production due to the harmonics present in the airgap, leading to significant rotor loss in high power and high speed machines. By using carbon fiber for the retaining sleeve and plastic bonded magnets for rotor magnetization, rotor eddy current loss may be reduced. Both materials require certain tradeoffs between electrical, mechanical and magnetic properties but their high electrical resistivity makes them attractive for use in high speed, fault tolerant, electrical machine design.
    Original languageEnglish
    Title of host publicationProceedings of IEEE Energy Conversion Congress and Exposition (ECCE 2011)
    EditorsJM Miller, U Despande
    Place of PublicationPiscataway, NJ, USA
    PublisherIEEE Society
    Number of pages7
    ISBN (Print)978-1-4577-0541-0
    Publication statusPublished - 2011
    EventECCE 2011 - Piscataway, NJ, USA
    Duration: 17 Sep 201122 Sep 2011

    Publication series



    ConferenceECCE 2011


    • conference contrib. refereed
    • Conf.proc. > 3 pag


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