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Analytical multi-parametric stability boundaries of DC-DC buck converters under V1 control concept

  • Dades identificatives

    Identificador: imarina:5131234
    Autors:
    El Aroudi, AGarcia, GAl Hosani, KAl Sayari, NAl-Numay, M
    Resum:
    Two main methods for controlling switching converters exist in the literature. The direct one is the voltage mode control, which suffers from some disadvantages such as slow response to load variations and an input voltage-dependent total loop gain. The current mode control can overcome these problems but at the expense of extra cost and more complex control design. V1 concept is a new promising control technique for designing voltage mode control of buck-type converters with an optimal response similar to current mode control. In this paper, the dynamics and the stability of buck converters under V1 control are studied. In particular, subharmonic oscillation limits in the parameter space are addressed. First, a closed-loop state-space model is derived and then used to formulate an analytical matrix-form expression for predicting the stability limit of the system. Using this expression, multi-parametric stability boundaries are obtained. It is shown that the equivalent series inductance of the output capacitor can narrow the stability region. It is also demonstrated that the integral action in the feedback loop of a V1-controlled buck converter has a negligible effect on the subharmonic oscillation boundary. The theoretical analysis is validated through numerical simulation of the circuit-level switched model of the system.
  • Altres:

    Autor segons l'article: El Aroudi, A; Garcia, G; Al Hosani, K; Al Sayari, N; Al-Numay, M
    Departament: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/s de la URV: El Aroudi Chaoui, Abdelali
    Paraules clau: Switched mode power supplies Subharmonic oscillation Stability analysis Power electronics Dc-dc power conversion Dc-dc converter Circuit stability
    Resum: Two main methods for controlling switching converters exist in the literature. The direct one is the voltage mode control, which suffers from some disadvantages such as slow response to load variations and an input voltage-dependent total loop gain. The current mode control can overcome these problems but at the expense of extra cost and more complex control design. V1 concept is a new promising control technique for designing voltage mode control of buck-type converters with an optimal response similar to current mode control. In this paper, the dynamics and the stability of buck converters under V1 control are studied. In particular, subharmonic oscillation limits in the parameter space are addressed. First, a closed-loop state-space model is derived and then used to formulate an analytical matrix-form expression for predicting the stability limit of the system. Using this expression, multi-parametric stability boundaries are obtained. It is shown that the equivalent series inductance of the output capacitor can narrow the stability region. It is also demonstrated that the integral action in the feedback loop of a V1-controlled buck converter has a negligible effect on the subharmonic oscillation boundary. The theoretical analysis is validated through numerical simulation of the circuit-level switched model of the system.
    Àrees temàtiques: Engineering, electrical & electronic Engenharias iv Electronic, optical and magnetic materials Electrical and electronic engineering Computer science applications Astronomia / física Applied mathematics
    Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 00989886
    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/submittedVersion
    Enllaç font original: https://onlinelibrary.wiley.com/doi/10.1002/cta.2338
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: International Journal Of Circuit Theory And Applications. 45 (11): 1686-1700
    Referència de l'ítem segons les normes APA: El Aroudi, A; Garcia, G; Al Hosani, K; Al Sayari, N; Al-Numay, M (2017). Analytical multi-parametric stability boundaries of DC-DC buck converters under V1 control concept. International Journal Of Circuit Theory And Applications, 45(11), 1686-1700. DOI: 10.1002/cta.2338
    DOI de l'article: 10.1002/cta.2338
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2017
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Applied Mathematics,Computer Science Applications,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Engineering, Electrical & Electronic
    Switched mode power supplies
    Subharmonic oscillation
    Stability analysis
    Power electronics
    Dc-dc power conversion
    Dc-dc converter
    Circuit stability
    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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