Title:
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Fast grid synchronization technique based on a multiple cascaded general integrator scheme for distributed generation inverters
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Author:
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Matas Alcalá, José; Castilla Fernández, Miguel; García de Vicuña Muñoz de la Nava, José Luis; Miret Tomàs, Jaume; Alarcón Gallo, Eduardo; Camacho Santiago, Antonio
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Other authors:
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Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica; Universitat Politècnica de Catalunya. SEPIC - Sistemes Electrònics de Potència i de Control |
Abstract:
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This paper proposes a new structure for grid
synchronization based on generalized integrators (GI) that lead
to fast detection of positive and negative components of the grid
voltage. The GI are used as a band pass filter (GI-BPF) mainly
to provide in-phase and quadrature components of grid
voltage. The proposed structure consists in the cascaded
connection of multiple GI-BPF to achieve a faster time response
than a single GI-BPF but with the same bandwidth
characteristics. This structure is used with a frequency locked
loop and a positive sequence detector to operate under
unbalanced voltage sags. Simulations and experimental results
of a photovoltaic power system injecting power to the grid in
the stationary reference frame are shown to validate this
proposal. Comparisons between this proposal and one that uses
a single GI-BPF in the sequence detector are provided. The
results show that the proposed cascaded GI-BPF achieves a
considerably time response reduction in the sequence grid
detection under a fault with the same quality-filter
characteristics. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Energies::Energia elèctrica::Automatització i control de l'energia elèctrica -Photovoltaic power systems -Bandwidth characteristics -Frequency locked loops -Generalized integrators -Grid voltage -In-phase -Negative components -Photovoltaic power systems -Quadrature components -Reference frame -Sequence detection -Synchronization technique -Time response -Unbalanced voltage sags -Voltage sags -Sistemes de distribució d'energia elèctrica -- Control de qualitat -Energia elèctrica -- Transmissió |
Rights:
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Document type:
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Article - Published version Conference Object |
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