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Prediction of subharmonic oscillation in switching converters under different control strategies

  • Dades identificatives

    Identificador: imarina:9282527
    Autors:
    El Aroudi, Abdelali
    Resum:
    Subharmonic oscillation is an undesired phenomenon in switching converters. In past studies, its prediction has been mainly tackled by explicitly deriving a discrete-time model and then linearizing it in the vicinity of the operating point. However, the results obtained from such an approach cannot be applied for design purpose except for simple cases such as peak or valley current-mode control (CMC). Alternatively, in this brief, this phenomenon is analyzed by using a unified formal symbolic approach that can be applied for different control strategies. This approach is based on expressing the condition for subharmonic oscillation occurrence using Fourier series and then converting the result into a matrix-form expression that explicitly depends on the system parameters, making the results directly applicable for design purpose. Under certain practical conditions concerning these parameters, the matrix-form expression can be approximated by standard polynomial functions depending on the operating duty cycle. The results presented in this work clearly generalize the well-known stability condition of peak/valley CMC. © 2004-2012 IEEE.
  • Altres:

    Autor segons l'article: El Aroudi, Abdelali
    Departament: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/s de la URV: El Aroudi Chaoui, Abdelali
    Paraules clau: Voltage-mode control (vmc) Voltage-mode control Valley current-mode V2 control V control 2 V control 2 Switching converter Subharmonic oscillations Subharmonic oscillation Stability condition Polynomial functions Fourier series Discrete-time model Dc-dc converters Current-mode control (cmc) Current-mode control
    Resum: Subharmonic oscillation is an undesired phenomenon in switching converters. In past studies, its prediction has been mainly tackled by explicitly deriving a discrete-time model and then linearizing it in the vicinity of the operating point. However, the results obtained from such an approach cannot be applied for design purpose except for simple cases such as peak or valley current-mode control (CMC). Alternatively, in this brief, this phenomenon is analyzed by using a unified formal symbolic approach that can be applied for different control strategies. This approach is based on expressing the condition for subharmonic oscillation occurrence using Fourier series and then converting the result into a matrix-form expression that explicitly depends on the system parameters, making the results directly applicable for design purpose. Under certain practical conditions concerning these parameters, the matrix-form expression can be approximated by standard polynomial functions depending on the operating duty cycle. The results presented in this work clearly generalize the well-known stability condition of peak/valley CMC. © 2004-2012 IEEE.
    Àrees temàtiques: Engineering, electrical & electronic Engenharias iv Electrical and electronic engineering Ciência da computação Astronomia / física
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    Adreça de correu electrònic de l'autor: abdelali.elaroudi@urv.cat
    Identificador de l'autor: 0000-0001-9103-7762
    Data d'alta del registre: 2024-10-12
    Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
    Enllaç font original: https://ieeexplore.ieee.org/document/6132459
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Ieee Transactions On Circuits And Systems Ii-Express Briefs. 61 (11): 910-914
    Referència de l'ítem segons les normes APA: El Aroudi, Abdelali (2014). Prediction of subharmonic oscillation in switching converters under different control strategies. Ieee Transactions On Circuits And Systems Ii-Express Briefs, 61(11), 910-914. DOI: 10.1109/TCSII.2011.2180097
    DOI de l'article: 10.1109/TCSII.2011.2180097
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2014
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Electrical and Electronic Engineering,Engineering, Electrical & Electronic
    Voltage-mode control (vmc)
    Voltage-mode control
    Valley current-mode
    V2 control
    V control 2
    V control 2
    Switching converter
    Subharmonic oscillations
    Subharmonic oscillation
    Stability condition
    Polynomial functions
    Fourier series
    Discrete-time model
    Dc-dc converters
    Current-mode control (cmc)
    Current-mode control
    Engineering, electrical & electronic
    Engenharias iv
    Electrical and electronic engineering
    Ciência da computação
    Astronomia / física
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