The increasing penetration of Distributed Generators (DG) in the modern electric distribution network poses high priority on the problem of the stability. In this article the Harmonic Stability of a Smart Transformer-fed microgrid is investigated under different control strategies. The considered microgrid is composed by a Smart Transformer and three Distributed Generators, considering the bandwidth of the DGs unknown. The robustness is evaluated analysing the eigenvalues as a consequence of a variation of the DGs bandwidth. The system is modelled as a Multi Input Multi Output System (MIMO); the eigenvalue based analysis is carried out to assess the stability and compare the robustness of the traditional double-loop PI and a state-feedback (SF) integral controller. The results show that the SF controller ensures a higher robustness than the traditional PI controller with respect to increasing bandwidths of the DGs.


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    Titel :

    Robustness Analysis of Voltage Control Strategies of Smart Transformer


    Beteiligte:
    Cecati, Federico (Autor:in) / Andresen, Markus (Autor:in) / Zhu, Rongwu (Autor:in) / Zou, Zhixiang (Autor:in) / Liserre, Marco (Autor:in)

    Erscheinungsdatum :

    2018-01-01



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :

    DDC:    6 / 621 / 629



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