A significant problem of three-level neutral point clamped converters is the fluctuation of the neutral point voltage. A space vector pulse width modulation (SVPWM) strategy with neutral point voltage balancing for single-phase three-level converters adopted widely in railway traction drive system is proposed in this study. The relationship between the adopted SVPWM and carrier-based pulse width modulation (CBPWM) with an offset voltage injection (OVI) is analysed in details. Theoretical analysis shows that the adopted SVPWM is a special type of CBPWM-OVI methods, and can balance the neutral point voltage effectively. The high-order harmonics of the line current distribute around twice switching frequencies while the SVPWM algorithm is adopted. These performances of the proposed SVPWM are verified by simulation and experimental tests.


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    Titel :

    Single-phase three-level space vector pulse width modulation algorithm for grid-side railway traction converter and its relationship of carrier-based pulse width modulation


    Beteiligte:
    Song, Wensheng (Autor:in) / Wang, Shunliang (Autor:in) / Xiong, Chenglin (Autor:in) / Ge, Xinglai (Autor:in) / Feng, Xiaoyun (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    2014-09-01


    Format / Umfang :

    10 pages




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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