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

  • Identification data

    Identifier: imarina:5132883
    Authors:
    El Aroudi A., Mandal K., Giaouris D., Banerjee S., Abusorrah A., Al Hindawi M., Al-Turki Y.
    Abstract:
    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.
  • Others:

    Author, as appears in the article.: El Aroudi A., Mandal K., Giaouris D., Banerjee S., Abusorrah A., Al Hindawi M., Al-Turki Y.
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: El Aroudi Chaoui, Abdelali
    Keywords: Stability analysis High step-up conversion ratio Dc-dc power conversion Cascaded converters
    Abstract: 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.
    Thematic Areas: Engineering, electrical & electronic Engenharias iv Electronic, optical and magnetic materials Electrical and electronic engineering Computer science applications Astronomia / física Applied mathematics
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 00989886
    Author's mail: abdelali.elaroudi@urv.cat
    Author identifier: 0000-0001-9103-7762
    Record's date: 2024-09-07
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://onlinelibrary.wiley.com/doi/abs/10.1002/cta.2153
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: International Journal Of Circuit Theory And Applications. 44 (5): 1127-1141
    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
    Article's DOI: 10.1002/cta.2153
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2016
    Publication Type: Journal Publications
  • Keywords:

    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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