Proportional harmonic current sharing among inverters is desired in ac microgrid with nonlinear loads. Usually, virtual impedance is emulated to achieve good harmonic current sharing at the cost of increased harmonic voltage distortion in the system. Existing schemes overcome this issue by communicating voltage and/or current values among inverters, thereby requiring significant data exchange. Further, some of them suffer from single point of failure because of their centralized architecture. This article proposes a distributed controller, which emulates harmonic voltage sources in addition to the virtual impedance, thereby reducing voltage distortion in the system. Furthermore, the proposed scheme reduces congestion in the communication network, as compared to the existing communication-based methods, as only two bits per harmonic frequency is communicated among inverters. The effect of virtual impedance on the stability of the system is investigated. Additionally, the impact of communication delay on the current sharing error is studied in this article. Finally, the proposed technique is validated through simulation and experimentation on a scaled-down laboratory prototype.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    A Distributed-Controlled Harmonic Virtual Impedance Loop for AC Microgrids


    Beteiligte:
    Das, Anubrata (Autor:in) / Shukla, Ankit (Autor:in) / Shyam, A. B. (Autor:in) / Anand, Sandeep (Autor:in) / Guerreo, Josep M. (Autor:in) / Sahoo, Soumya Ranjan (Autor:in)

    Erscheinungsdatum :

    2021-05-01


    Anmerkungen:

    Das , A , Shukla , A , Shyam , A B , Anand , S , Guerreo , J M & Sahoo , S R 2021 , ' A Distributed-Controlled Harmonic Virtual Impedance Loop for AC Microgrids ' , IEEE Transactions on Industrial Electronics , vol. 68 , no. 5 , 9069413 , pp. 3949-3961 . https://doi.org/10.1109/TIE.2020.2987290



    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Klassifikation :

    DDC:    629



    An iterative adaptive virtual impedance loop for reactive power sharing in islanded meshed microgrids

    Sellamna, H. / Massi Pavan, A. / Mellit, A. et al. | BASE | 2020

    Freier Zugriff

    Adaptive Virtual Flux Droop Control Based on Virtual Impedance in Islanded AC Microgrids

    Khanabdal, Saheb / Banejad, Mahdi / Blaabjerg, Frede et al. | BASE | 2022

    Freier Zugriff

    Decentralized Virtual Impedance-based Circulating Current Suppression Control for Islanded Microgrids

    Abu Bakar, A. / Pathan, E. / Khan, M. H. et al. | BASE | 2021

    Freier Zugriff

    Power Flow Analysis for Low-Voltage AC and DC Microgrids Considering Droop Control and Virtual Impedance

    Li, Chendan / Chaudhary, Sanjay Kumar / Savaghebi, Mehdi et al. | BASE | 2017

    Freier Zugriff

    Distributed Event-triggered Control for Reactive, Unbalanced and Harmonic Power Sharing in Islanded AC Microgrids

    Lu, Jinghang / Zhao, Ming / Golestan, Saeed et al. | BASE | 2021

    Freier Zugriff