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An Output Feedback Discrete-Time Controller for the DC-DC Buck Converter

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  • Martin A. Alarcón-Carbajal

    (División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México/IT de Culiacán, Culiacán 80220, Mexico
    These authors contributed equally to this work.)

  • José E. Carvajal-Rubio

    (Departamento de Control Automatico, CINVESTAV, Zapopan 45019, Mexico
    LAMIH, INSA, Université Polytechnique Hauts-de-France, 59313 Valenciennes, France
    These authors contributed equally to this work.)

  • Juan D. Sánchez-Torres

    (Department of Mathematics and Physics, ITESO, San Pedro Tlaquepaque 45604, Mexico
    These authors contributed equally to this work.)

  • David E. Castro-Palazuelos

    (División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México/IT de Culiacán, Culiacán 80220, Mexico
    These authors contributed equally to this work.)

  • Guillermo J. Rubio-Astorga

    (División de Estudios de Posgrado e Investigación, Tecnológico Nacional de México/IT de Culiacán, Culiacán 80220, Mexico
    These authors contributed equally to this work.)

Abstract

This paper presents a discrete-time output feedback controller to regulate the output voltage of a DC-DC buck converter. The proposal’s main feature is the application of a discrete-time equivalent of the robust exact filtering differentiator. First, the document exposes a theoretical analysis of the closed-loop system, where it is considered the problem of implementing a real-time differentiator with a good relationship between exactness and noise filtration performance. Hence, secondly, the controller in a laboratory setup is presented. The first experimental results suggest that the proposed controller exhibits good robustness against noise and maintains the asymptotic accuracy, even with saturated control inputs, as in the case of the DC-DC buck converter. Consequently, aiming to verify the features of the proposed method, the controller is validated through multiple experiments, showing satisfactory voltage tracking accuracy, good suppression of instantaneous load and supply voltage disturbances, and robustness against bounded measurement noise.

Suggested Citation

  • Martin A. Alarcón-Carbajal & José E. Carvajal-Rubio & Juan D. Sánchez-Torres & David E. Castro-Palazuelos & Guillermo J. Rubio-Astorga, 2022. "An Output Feedback Discrete-Time Controller for the DC-DC Buck Converter," Energies, MDPI, vol. 15(14), pages 1-21, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:14:p:5288-:d:868073
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    References listed on IDEAS

    as
    1. Marco Faifer & Luigi Piegari & Marco Rossi & Sergio Toscani, 2021. "An Average Model of DC–DC Step-Up Converter Considering Switching Losses and Parasitic Elements," Energies, MDPI, vol. 14(22), pages 1-18, November.
    2. Julio López Seguel & Seleme I. Seleme, 2021. "Robust Digital Control Strategy Based on Fuzzy Logic for a Solar Charger of VRLA Batteries," Energies, MDPI, vol. 14(4), pages 1-27, February.
    3. Turksoy, Arzu & Teke, Ahmet & Alkaya, Alkan, 2020. "A comprehensive overview of the dc-dc converter-based battery charge balancing methods in electric vehicles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 133(C).
    4. Eduardo Campos-Mercado & Edwin Fernando Mendoza-Santos & Jorge Antonio Torres-Muñoz & Edwin Román-Hernández & Víctor Iván Moreno-Oliva & Quetzalcoatl Hernández-Escobedo & Alberto-Jesus Perea-Moreno, 2021. "Nonlinear Controller for the Set-Point Regulation of a Buck Converter System," Energies, MDPI, vol. 14(18), pages 1-20, September.
    5. Aline V. C. Pereira & Marcelo C. Cavalcanti & Gustavo M. Azevedo & Fabrício Bradaschia & Rafael C. Neto & Márcio Rodrigo Santos de Carvalho, 2021. "A Novel Single-Switch High Step-Up DC–DC Converter with Three-Winding Coupled Inductor," Energies, MDPI, vol. 14(19), pages 1-17, October.
    Full references (including those not matched with items on IDEAS)

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