This paper proposes the design considerations of a high-voltage-high-power dc-dc modular multilevel converter (MMC), which is consist of the half-bridge submodules and an isolation transformer. To adapt the power density requirements of the transportation applications, a modulation method with low switching frequency for submodules but high-frequency ac voltage for transformer is proposed, aiming to reduce the size of the transformer, the inductors and the dc-capacitors of the submodules. The voltage fluctuation at the dc-capacitor in such a modulation is also estimated. Finally, a design example with 10kV to 20kV voltage and 1MW rating power is given. The analysis and simulation results are matched, which shows the validity of the analysis.


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    Titel :

    DC-DC modular multilevel converter with high frequency transformer for transportation applications


    Beteiligte:
    Yuqing Cui (Autor:in) / Yu Chen (Autor:in) / Yingzhuo Chen (Autor:in) / Yong Kang (Autor:in) / Xiaoguang Wei (Autor:in) / Xinying Wang (Autor:in)


    Erscheinungsdatum :

    01.08.2014


    Format / Umfang :

    1772924 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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