Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Architectures and Control of Submodule Integrated DC-DC Converters for Photovoltaic Applications

  • Identification data

    Identifier: imarina:5127843
    Authors:
    Olalla, CarlosClement, DanielRodriguez, MiguelMaksimovic, Dragan
    Abstract:
    This paper describes photovoltaic (PV) module architectures with parallel-connected submodule integrated DCDC converters (subMICs) that improve efficiency of energy capture in the presence of partial shading or other mismatch conditions. The subMICs are bidirectional isolated dc-dc converters capable of injecting or subtracting currents to balance the module substring voltages. When no mismatches are present, the subMICs are simply shut down, resulting in zero insertion losses. It is shown that the objective of minimum subMIC power processing can be solved as a linear programming problem. A simple close-to-optimal distributed control approach is presented that allows autonomous subMIC control without the need for a central controller or any communication among the subMICs. Furthermore, the proposed control approach is well suited for an isolated-port architecture, which yields additional practical advantages including reduced subMIC power and voltage ratings. The architectures and the control approach are validated by simulations and experimental results using three bidirectional flyback subMICs attached to a standard 180 W, 72-cell PV module, yielding greater than 98 % module-level power processing efficiency for a mismatch less than 25 %.
  • Others:

    Author, as appears in the article.: Olalla, Carlos; Clement, Daniel; Rodriguez, Miguel; Maksimovic, Dragan
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Olalla Martínez, Carlos
    Keywords: Submoduleintegrated dc-dc converters (submics) Renewable energy systems Photovoltaic (pv)modules Modeling and control of power electronics Maximum power point tracking (mppt) Distributed maximum power point tracking Differential power processing Dc-dc converters
    Abstract: This paper describes photovoltaic (PV) module architectures with parallel-connected submodule integrated DCDC converters (subMICs) that improve efficiency of energy capture in the presence of partial shading or other mismatch conditions. The subMICs are bidirectional isolated dc-dc converters capable of injecting or subtracting currents to balance the module substring voltages. When no mismatches are present, the subMICs are simply shut down, resulting in zero insertion losses. It is shown that the objective of minimum subMIC power processing can be solved as a linear programming problem. A simple close-to-optimal distributed control approach is presented that allows autonomous subMIC control without the need for a central controller or any communication among the subMICs. Furthermore, the proposed control approach is well suited for an isolated-port architecture, which yields additional practical advantages including reduced subMIC power and voltage ratings. The architectures and the control approach are validated by simulations and experimental results using three bidirectional flyback subMICs attached to a standard 180 W, 72-cell PV module, yielding greater than 98 % module-level power processing efficiency for a mismatch less than 25 %.
    Thematic Areas: Interdisciplinar Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering Ciências agrárias i Ciência da computação
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: carlos.olalla@urv.cat
    Author identifier: 0000-0001-8333-9840
    Record's date: 2024-10-12
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://ieeexplore.ieee.org/abstract/document/6303921
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Ieee Transactions On Power Electronics. 28 (6): 2980-2997
    APA: Olalla, Carlos; Clement, Daniel; Rodriguez, Miguel; Maksimovic, Dragan (2013). Architectures and Control of Submodule Integrated DC-DC Converters for Photovoltaic Applications. Ieee Transactions On Power Electronics, 28(6), 2980-2997. DOI: 10.1109/TPEL.2012.2219073
    Article's DOI: 10.1109/TPEL.2012.2219073
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2013
    Publication Type: Journal Publications
  • Keywords:

    Electrical and Electronic Engineering,Engineering, Electrical & Electronic
    Submoduleintegrated dc-dc converters (submics)
    Renewable energy systems
    Photovoltaic (pv)modules
    Modeling and control of power electronics
    Maximum power point tracking (mppt)
    Distributed maximum power point tracking
    Differential power processing
    Dc-dc converters
    Interdisciplinar
    Engineering, electrical & electronic
    Engenharias iv
    Engenharias iii
    Electrical and electronic engineering
    Ciências agrárias i
    Ciência da computação
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