The performance capability envelope of a variable-frequency, permanent-magnet synchronous motor drive with field weakening is dependent upon the product of maximum current and direct-axis inductance. To obtain a performance characteristic suitable for a typical electric vehicle drive, in which short-term increase of current is applied, it is necessary to design an optimum value of direct-axis inductance. The paper presents an analysis of a hybrid motor design which uses a two-part rotor construction comprising a surface-magnet part and an axially laminated reluctance part. This arrangement combines the properties of all other types of synchronous motor and offers a greater choice of design variables. It is shown that the desired form of performance may be achieved when the high-inductance axis of the reluctance part is arranged to lead the magnet axis by 90 degrees (elec.).


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    Titel :

    Variable-frequency synchronous motor drives for electric vehicles


    Weitere Titelangaben:

    Ein drehzahlveränderbarer Synchronmotor mit Doppelläufer für Elektrofahrzeuge


    Beteiligte:
    Chalmers, B.J. (Autor:in) / Musaba, L. (Autor:in) / Gosden, D.F. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    1996


    Format / Umfang :

    8 Seiten, 11 Quellen




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Print


    Sprache :

    Englisch




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