Design optimization of air-ducts in rotating machines with high power density

T. Onuki, Shinji Wakao, J. W. Im, H. Takahashi, T. Miyokawa

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    4 Citations (Scopus)


    Recently, the request for the compactness of rotating machines such as traction motors has been increasing and thus the rotating machines should be of high power density. The compactness of motors makes the problem of the magnetic saturation more serious. With this background, this paper describes the design optimization of air-ducts in induction motors. By investigating the relationship between the rotor-yoke configuration with air-ducts and the magnetic flux density in the air-gap, we determine the desirable air-ducts arrangement. Some numerical results, which demonstrate the validity of the proposed approach, are also presented.

    Original languageEnglish
    Pages (from-to)2853-2856
    Number of pages4
    JournalIEEE Transactions on Magnetics
    Issue number5 PART 1
    Publication statusPublished - 1998



    • Air-duct
    • Design optimization
    • Hybrid fe-be method
    • Magnetic saturation
    • Rotating machines
    • Space harmonics

    ASJC Scopus subject areas

    • Electrical and Electronic Engineering
    • Physics and Astronomy (miscellaneous)

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