Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Improved static and dynamic performances of a two-cell DC-DC buck converter using a digital dynamic time-delayed control

  • Dades identificatives

    Identificador: imarina:9285170
    Autors:
    Kaoubaa, KaramaPelaez-Restrepo, JFeki, MRobert, B G MEl Aroudi, A
    Resum:
    Multi-cell converters have been developed to overcome shortcomings in usual switching devices. The control system in these circuits is twofold: first, to balance voltages of the switches and second to regulate the load current to a desired value. However, with a purely proportional controller, the system presents a static error. With a PI controller the static error is annihilated, but at the expense of shortening the stability region and increasing settling time. In this work, a zero static error dynamic controller for a two-cell DC-DC buck converter is designed. To achieve zero current error, we propose a generalized scheme of a dynamic controller. Then, using nonlinear analysis and Lyapunov stability theory and bifurcation prediction tools, we prove that zero static error is achieved. The proposed controller outperforms the PI controller in terms of settling time in the presence of saturating effect during the start-up transients. Numerical simulations in the form of time domain waveforms and bifurcation diagrams from switched circuit-based model are presented to confirm our theoretical results. Copyright © 2010 John Wiley & Sons, Ltd.
  • Altres:

    Autor segons l'article: Kaoubaa, Karama; Pelaez-Restrepo, J; Feki, M; Robert, B G M; El Aroudi, A
    Departament: Enginyeria Electrònica, Elèctrica i Automàtica
    Autor/s de la URV: El Aroudi Chaoui, Abdelali
    Paraules clau: Zero currents Time-domain waveforms Theoretical result Switching devices Subharmonics Static error Static and dynamic performance Start-ups Stability regions Settling time Proportional controller Prediction tools Pi controller Nonlinear analysis Multicell Multi-cell converter Lyapunov stability theory Lyapunov stability Load currents Dynamic tdfc Dynamic controller Digital control systems Digital control Dc-dc buck converter Cytology Controllers Circuit-based models Cells Bifurcation diagram Bifurcation (mathematics)
    Resum: Multi-cell converters have been developed to overcome shortcomings in usual switching devices. The control system in these circuits is twofold: first, to balance voltages of the switches and second to regulate the load current to a desired value. However, with a purely proportional controller, the system presents a static error. With a PI controller the static error is annihilated, but at the expense of shortening the stability region and increasing settling time. In this work, a zero static error dynamic controller for a two-cell DC-DC buck converter is designed. To achieve zero current error, we propose a generalized scheme of a dynamic controller. Then, using nonlinear analysis and Lyapunov stability theory and bifurcation prediction tools, we prove that zero static error is achieved. The proposed controller outperforms the PI controller in terms of settling time in the presence of saturating effect during the start-up transients. Numerical simulations in the form of time domain waveforms and bifurcation diagrams from switched circuit-based model are presented to confirm our theoretical results. Copyright © 2010 John Wiley & Sons, Ltd.
    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/
    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://onlinelibrary.wiley.com/doi/abs/10.1002/cta.735
    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. 40 (4): 395-407
    Referència de l'ítem segons les normes APA: Kaoubaa, Karama; Pelaez-Restrepo, J; Feki, M; Robert, B G M; El Aroudi, A (2012). Improved static and dynamic performances of a two-cell DC-DC buck converter using a digital dynamic time-delayed control. International Journal Of Circuit Theory And Applications, 40(4), 395-407. DOI: 10.1002/cta.735
    DOI de l'article: 10.1002/cta.735
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2012
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Applied Mathematics,Computer Science Applications,Electrical and Electronic Engineering,Electronic, Optical and Magnetic Materials,Engineering, Electrical & Electronic
    Zero currents
    Time-domain waveforms
    Theoretical result
    Switching devices
    Subharmonics
    Static error
    Static and dynamic performance
    Start-ups
    Stability regions
    Settling time
    Proportional controller
    Prediction tools
    Pi controller
    Nonlinear analysis
    Multicell
    Multi-cell converter
    Lyapunov stability theory
    Lyapunov stability
    Load currents
    Dynamic tdfc
    Dynamic controller
    Digital control systems
    Digital control
    Dc-dc buck converter
    Cytology
    Controllers
    Circuit-based models
    Cells
    Bifurcation diagram
    Bifurcation (mathematics)
    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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