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  • Robust nonlinear controller design for Three-phase grid-connected photovoltaic systems under structured uncertainties

    Author(s)
    Mahmud, MA
    Hossain, MJ
    Pota, HR
    Roy, NK
    Griffith University Author(s)
    Hossain, Jahangir
    Year published
    2014
    Metadata
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    Abstract
    This paper presents a robust nonlinear controller design for a three-phase grid-connected photovoltaic (PV) system to control the current injected into the grid and the dc-link voltage for extracting maximum power from PV units. The controller is designed based on the partial feedback linearization approach, and the robustness of the proposed control scheme is ensured by considering structured uncertainties within the PV system model. An approach for modeling the uncertainties through the satisfaction of matching conditions is provided. The superiority of the proposed robust controller is demonstrated on a test system through ...
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    This paper presents a robust nonlinear controller design for a three-phase grid-connected photovoltaic (PV) system to control the current injected into the grid and the dc-link voltage for extracting maximum power from PV units. The controller is designed based on the partial feedback linearization approach, and the robustness of the proposed control scheme is ensured by considering structured uncertainties within the PV system model. An approach for modeling the uncertainties through the satisfaction of matching conditions is provided. The superiority of the proposed robust controller is demonstrated on a test system through simulation results under different system contingencies along with changes in atmospheric conditions. From the simulation results, it is evident that the robust controller provides excellent performance under various operating conditions.
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    Journal Title
    IEEE Transactions on Power Delivery
    Volume
    29
    Issue
    3
    DOI
    https://doi.org/10.1109/TPWRD.2014.2309594
    Subject
    Electrical energy generation (incl. renewables, excl. photovoltaics)
    Publication URI
    http://hdl.handle.net/10072/62348
    Collection
    • Journal articles

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