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Fast-Scale Stability Limits of a Two-Stage Boost Power Converter

  • Datos identificativos

    Identificador: imarina:5132883
    Autores:
    El Aroudi A., Mandal K., Giaouris D., Banerjee S., Abusorrah A., Al Hindawi M., Al-Turki Y.
    Resumen:
    There are many applications in power electronics that demand high step‐up conversion ratio between the source and the load. A simple way of achieving such a high voltage ratio is by cascading DC-DC boost converters in a few stages. The individual converters in such a cascaded system are usually designed separately applying classical design criteria. This paper investigates the stability of the overall system of a cascade connection of two boost converters under current mode control. We first demonstrate the bifurcation behavior of the system, and it is shown that the desired periodic orbit can undergo fast‐scale period doubling bifurcation leading to subharmonic oscillations and chaotic regimes under parameter variation. The value of the intermediate capacitor is taken as a design parameter, and we determine the minimum ramp slope in the first stage required to maintain stability. It is shown that smaller capacitance values give rise to wider stability range. We explain the bifurcation phenomena using a full‐order model. Then, in order to simplify the analysis and to obtain a closed‐form expression to explain the previous observation, we develop a reduced‐order model by treating the second stage as a current sink. This allows us to obtain design‐oriented stability boundaries in the parameter space by taking into account slope interactions between the state variables in the two stages. Copyright © 2015 John Wiley & Sons, Ltd.
  • Otros:

    Autor según el artículo: El Aroudi A., Mandal K., Giaouris D., Banerjee S., Abusorrah A., Al Hindawi M., Al-Turki Y.
    Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/es de la URV: El Aroudi Chaoui, Abdelali
    Palabras clave: Stability analysis High step-up conversion ratio Dc-dc power conversion Cascaded converters
    Resumen: There are many applications in power electronics that demand high step‐up conversion ratio between the source and the load. A simple way of achieving such a high voltage ratio is by cascading DC-DC boost converters in a few stages. The individual converters in such a cascaded system are usually designed separately applying classical design criteria. This paper investigates the stability of the overall system of a cascade connection of two boost converters under current mode control. We first demonstrate the bifurcation behavior of the system, and it is shown that the desired periodic orbit can undergo fast‐scale period doubling bifurcation leading to subharmonic oscillations and chaotic regimes under parameter variation. The value of the intermediate capacitor is taken as a design parameter, and we determine the minimum ramp slope in the first stage required to maintain stability. It is shown that smaller capacitance values give rise to wider stability range. We explain the bifurcation phenomena using a full‐order model. Then, in order to simplify the analysis and to obtain a closed‐form expression to explain the previous observation, we develop a reduced‐order model by treating the second stage as a current sink. This allows us to obtain design‐oriented stability boundaries in the parameter space by taking into account slope interactions between the state variables in the two stages. Copyright © 2015 John Wiley & Sons, Ltd.
    Áreas temáticas: Engineering, electrical & electronic Engenharias iv Electronic, optical and magnetic materials Electrical and electronic engineering Computer science applications Astronomia / física Applied mathematics
    Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 00989886
    Direcció de correo del autor: abdelali.elaroudi@urv.cat
    Identificador del autor: 0000-0001-9103-7762
    Fecha de alta del registro: 2024-09-07
    Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion
    Enlace a la fuente original: https://onlinelibrary.wiley.com/doi/abs/10.1002/cta.2153
    URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referencia al articulo segun fuente origial: International Journal Of Circuit Theory And Applications. 44 (5): 1127-1141
    Referencia de l'ítem segons les normes APA: El Aroudi A., Mandal K., Giaouris D., Banerjee S., Abusorrah A., Al Hindawi M., Al-Turki Y. (2016). Fast-Scale Stability Limits of a Two-Stage Boost Power Converter. International Journal Of Circuit Theory And Applications, 44(5), 1127-1141. DOI: 10.1002/cta.2153
    DOI del artículo: 10.1002/cta.2153
    Entidad: Universitat Rovira i Virgili
    Año de publicación de la revista: 2016
    Tipo de publicación: Journal Publications
  • Palabras clave:

    Applied Mathematics,Computer Science Applications,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Engineering, Electrical & Electronic
    Stability analysis
    High step-up conversion ratio
    Dc-dc power conversion
    Cascaded converters
    Engineering, electrical & electronic
    Engenharias iv
    Electronic, optical and magnetic materials
    Electrical and electronic engineering
    Computer science applications
    Astronomia / física
    Applied mathematics
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