Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Prediction of subharmonic oscillation in switching converters under different control strategies

  • Identification data

    Identifier: imarina:9282527
    Authors:
    El Aroudi, Abdelali
    Abstract:
    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.
  • Others:

    Author, as appears in the article.: El Aroudi, Abdelali
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: El Aroudi Chaoui, Abdelali
    Keywords: 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
    Abstract: 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.
    Thematic Areas: Engineering, electrical & electronic Engenharias iv Electrical and electronic engineering Ciência da computação Astronomia / física
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: abdelali.elaroudi@urv.cat
    Author identifier: 0000-0001-9103-7762
    Record's date: 2024-10-12
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://ieeexplore.ieee.org/document/6132459
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Ieee Transactions On Circuits And Systems Ii-Express Briefs. 61 (11): 910-914
    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
    Article's DOI: 10.1109/TCSII.2011.2180097
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2014
    Publication Type: Journal Publications
  • Keywords:

    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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