Double sided axial field machines are attractive for direct wheel drives in electric vehicles. This is due to the fact that stator/rotor misalignments can be accommodated. In this case the stator of the machine is envisaged mounted on the chassis of the car whilst the rotor directly drives the road wheel. Since the wheel is perturbed by the road surface the rotor will move vertically between the outside stator assemblies and thus give rise to torque pulsations. A vector control scheme has been implemented whereby the torque pulsations are eliminated by (i) calculation of the flux variation due to the rotor perturbation and (ii) using this signal for the modulation of the motor input current


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    Title :

    Elimination of torque pulsations in a direct drive EV wheel motor


    Additional title:

    Beseitigung der Drehmomentwechselbelastung beim Direktantrieb eines Elektrofahrzeuges


    Contributors:
    Hredzak, B. (author) / Gair, S. (author) / Eastham, J.F. (author)


    Publication date :

    1996


    Size :

    3 Seiten, 5 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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