Multiple three-phase voltage source converters may be connected in parallel to supply an AC voltage bus or a load in excess of the rating of an individual power converter. Without a circulating path, a zero-sequence current generally does not exist in a single power converter; however, it typically exists in parallel-connected three-phase power converters. The presence of zero-sequence currents in three-phase systems, which may be caused by the circuit asymmetry, introduces further asymmetry of electrical variables and is indicative of abnormal condition of the circuit in which these components are found. This paper presents a detailed small-signal mathematical model that can represent the zero-sequence current dynamics in the parallel-connected voltage source converters and investigates the effects of a variety of factors on the zero-sequence currents. Time-domain simulation studies are performed to verify the controller performance and the effects of the system and controller parameter variations on the zero-sequence currents.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Zero-sequence current dynamics in parallel-connected voltage source converters


    Beteiligte:
    Yu Zhang, (Autor:in) / Zhenhua Jiang, (Autor:in)


    Erscheinungsdatum :

    2009-04-01


    Format / Umfang :

    406769 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Current distribution control for parallel connected converters. I

    Siri, K. / Lee, C.Q. / Wu, T.-E. | IEEE | 1992


    Current distribution control for parallel connected converters. II

    Siri, K. / Lee, C.Q. / Wu, T.-F. | IEEE | 1992


    Unified Impedance Model of Grid-Connected Voltage-Source Converters

    Wang, Xiongfei / Harnefors, Lennart / Blaabjerg, Frede | BASE | 2018

    Freier Zugriff


    Circulating current control in interleaved and parallel connected power converters

    Javed, Khalid / De Croo, Ruben / Vandevelde, Lieven et al. | BASE | 2023

    Freier Zugriff