Composite materials for low loss rotor construction

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

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

    7 Citations (Scopus)


    The use of concentrated windings in electrical machines leads to significant rotor losses due to severe space harmonics in the airgap. Metallic retaining sleeves and sintered magnets used in high speed rotor construction have low electrical resistivities, leading to larger associated eddy currents loss. Composite materials like carbon fiber and plastic bonded magnets are investigated, due to their relative low conductivity. Analysing eddy current loss in composites can be cumbersome as they are frequently anisotropic. By observing eddy currents induced in a sample material, the material resistivity may be derived for a given direction by reverse finite element modelling. Resistivity values may be further used to calculate rotor eddy current loss.
    Original languageEnglish
    Title of host publicationProceedings of the IEEE International Electric Machines & Drives Conference 2011
    EditorsA Rahman, M Masrur
    Place of PublicationPiscataway, NJ, USA
    PublisherIEEE Society
    Number of pages5
    ISBN (Print)978-1-4577-0060-6
    Publication statusPublished - 2011
    EventIEMDC 2011 - Piscataway, NJ, USA
    Duration: 15 May 201118 May 2011

    Publication series



    ConferenceIEMDC 2011


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


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