Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Performance of Power Limited Differential Power Processing Architectures in Mismatched PV Systems

  • Datos identificativos

    Identificador: imarina:5128636
    Autores:
    Olalla, CarlosDeline, ChristopherClement, DanielLevron, YoashRodriguez, MiguelMaksimovic, Dragan
    Resumen:
    Differential power processing (DPP) architectures employ distributed, low power processing, submodule-integrated converters to mitigate mismatches in photovoltaic (PV) power systems, while introducing no insertion losses. This paper evaluates the effects of the simple voltage-balancing DPP control approach on the submodule-level maximum power point (MPP) efficiency. It is shown that the submodule MPP efficiency of voltage-balancing DPP converters exceeds 98% in the presence of worst-case MPP voltage variations due to irradiance or temperature mismatches. Furthermore, the effects of reduced converter power rating in the isolated-port DPP architecture are investigated by long-term, high-granularity simulations of five representative PV system scenarios. For partially shaded systems, it is shown that the isolated-port DPP architecture offers about two times larger energy yield improvements compared to full power processing (FPP) module-level converters, and that it outperforms module-level FPP approaches even when the power rating of DPP converters is only 20-30% of the PV system peak power. In the cases of aging-related mismatches, more than 90% of the energy yield improvements are obtained with DPP converters rated at only 10% of the PV peak power.
  • Otros:

    Autor según el artículo: Olalla, Carlos; Deline, Christopher; Clement, Daniel; Levron, Yoash; Rodriguez, Miguel; Maksimovic, Dragan
    Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/es de la URV: Olalla Martínez, Carlos
    Palabras clave: Submodule-integrated converters (submics) Photovoltaic modules Partial shading Mismatch Equalization Differential power processing (dpp) Dc-dc converters Aging
    Resumen: Differential power processing (DPP) architectures employ distributed, low power processing, submodule-integrated converters to mitigate mismatches in photovoltaic (PV) power systems, while introducing no insertion losses. This paper evaluates the effects of the simple voltage-balancing DPP control approach on the submodule-level maximum power point (MPP) efficiency. It is shown that the submodule MPP efficiency of voltage-balancing DPP converters exceeds 98% in the presence of worst-case MPP voltage variations due to irradiance or temperature mismatches. Furthermore, the effects of reduced converter power rating in the isolated-port DPP architecture are investigated by long-term, high-granularity simulations of five representative PV system scenarios. For partially shaded systems, it is shown that the isolated-port DPP architecture offers about two times larger energy yield improvements compared to full power processing (FPP) module-level converters, and that it outperforms module-level FPP approaches even when the power rating of DPP converters is only 20-30% of the PV system peak power. In the cases of aging-related mismatches, more than 90% of the energy yield improvements are obtained with DPP converters rated at only 10% of the PV peak power.
    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/document/6776458
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: Ieee Transactions On Power Electronics. 30 (2): 618-631
    Referencia de l'ítem segons les normes APA: Olalla, Carlos; Deline, Christopher; Clement, Daniel; Levron, Yoash; Rodriguez, Miguel; Maksimovic, Dragan (2015). Performance of Power Limited Differential Power Processing Architectures in Mismatched PV Systems. Ieee Transactions On Power Electronics, 30(2), 618-631. DOI: 10.1109/TPEL.2014.2312980
    DOI del artículo: 10.1109/TPEL.2014.2312980
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2015
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Electrical and Electronic Engineering,Engineering, Electrical & Electronic
    Submodule-integrated converters (submics)
    Photovoltaic modules
    Partial shading
    Mismatch
    Equalization
    Differential power processing (dpp)
    Dc-dc converters
    Aging
    Interdisciplinar
    Engineering, electrical & electronic
    Engenharias iv
    Engenharias iii
    Electrical and electronic engineering
    Ciências agrárias i
    Ciência da computação
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