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

  • Datos identificativos

    Identificador: imarina:5127843
    Autores:
    Olalla, CarlosClement, DanielRodriguez, MiguelMaksimovic, Dragan
    Resumen:
    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 %.
  • Otros:

    Autor según el artículo: Olalla, Carlos; Clement, Daniel; Rodriguez, Miguel; Maksimovic, Dragan
    Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/es de la URV: Olalla Martínez, Carlos
    Palabras clave: 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
    Resumen: 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 %.
    Áreas temáticas: Interdisciplinar Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering Ciências agrárias i Ciência da computação
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    Direcció de correo del autor: carlos.olalla@urv.cat
    Identificador del autor: 0000-0001-8333-9840
    Fecha de alta del registro: 2024-10-12
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://ieeexplore.ieee.org/abstract/document/6303921
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Ieee Transactions On Power Electronics. 28 (6): 2980-2997
    Referencia de l'ítem segons les normes 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
    DOI del artículo: 10.1109/TPEL.2012.2219073
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2013
    Tipo de publicación: Journal Publications
  • Palabras clave:

    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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