This paper concentrates on the application of a three-level Neutral-Point Clamped (NPC) inverter in a Permanent Magnet Synchronous Motor (PMSM) driven electric vehicle. Carrier-Based Space Vector Modulation (CB-SVM) strategy allows a simple technique for inverter switching. A split-capacitor dc bus voltage balancing strategy using a simple PI controller has been presented for the entire speed range of operation of the PMSM. For the same current Total Harmonic Distortion (THD), three-level NPC inverter provides a 65% reduction in switching frequency when compared to a conventional two-level inverter while driving the PMSM with the same parameters. Torque and speed dual loop controllers have been developed using the Field-oriented Control technique to have a wider range of operation beyond the base speed of the PMSM.


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    Title :

    Neutral-point voltage balancing of three-level EV traction inverter using modified carrier-based SVM and THD comparison with a two-level inverter


    Contributors:
    Sejpal, L. (author) / Lopes, L. A. C. (author) / Amar, M. (author) / Williamson, S. S. (author)


    Publication date :

    2013-06-01


    Size :

    477678 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English