For power conversion systems interfaced to four-wire supplies, four-leg converters have become a standard solution. A four-leg converter allows good compensation of zero-sequence harmonics and full utilisation of the dc-link voltage. These are very important features when unbalanced and/or nonlinear loads are connected to the system. This paper proposes a three-dimensional space vector modulation (SVM) algorithm and provides a comprehensive analysis of the algorithm implemented on a three-level, four-leg neutral-point-clamped converter. The algorithm allows a simple definition of the different switching patterns and enables balancing of the dc-link capacitor voltages using the redundancies of the converter states. A resonant controller is selected as the control strategy to validate the proposed SVM algorithm in a 6 kW experimental rig.


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    Title :

    A New Space-Vector-Modulation Algorithm for a Three-Level Four-Leg NPC Inverter.


    Contributors:
    Rojas, F. (author) / Kennel, R. (author) / Cardenas, R. (author) / Repenning, R. (author) / Clare, J. (author) / Diaz, M. (author)

    Publication date :

    2017-05-23



    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English



    Classification :

    DDC:    620 / 629



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