Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Using low-cost microcontrollers to implement variable hysteresis-width comparators for switching power converters

  • Identification data

    Identifier: imarina:5132400
    Authors:
    Bosque-Moncusi J, Valderrama-Blavi H, Flores-Bahamonde F, Vidal-Idiarte E, Martínez-Salamero L
    Abstract:
    Hysteretic comparators are often used to implement sliding-mode controllers or other type of discontinuous regulators for power switching converters. Their design is usually performed analogically yielding robust and fast controllers that can even allow converter operation with high values of duty cycle. A new analogue implementation based on a low-cost microcontroller is described in this study showing the mentioned advantages plus the flexibility of a programmable digital system. The proposed comparator employs some microcontroller peripherals without consuming execution time of the control algorithm and without requiring interruption management. It provides variable hysteresis width to obtain constant switching frequency in sliding-mode strategies and can be used in any type of hard switching converter. The dynamic performance of the method is verified experimentally in a boost converter-based rectifier with power factor correction and output voltage regulation in one single stage. The boost converter operates in sliding mode with constant switching frequency and results in a total harmonic distortion of the input current <;1%.
  • Others:

    Author, as appears in the article.: Bosque-Moncusi J, Valderrama-Blavi H, Flores-Bahamonde F, Vidal-Idiarte E, Martínez-Salamero L
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: BOSQUE MONCUSÍ, JOSEP Mª / FLORES BAHAMONDE, FREEDDY ARTURO / Martínez Salamero, Luis / Valderrama Blavi, Hugo / Vidal Idiarte, Enric
    Keywords: microcontrollers comparators (circuits) switching convertors
    Abstract: Hysteretic comparators are often used to implement sliding-mode controllers or other type of discontinuous regulators for power switching converters. Their design is usually performed analogically yielding robust and fast controllers that can even allow converter operation with high values of duty cycle. A new analogue implementation based on a low-cost microcontroller is described in this study showing the mentioned advantages plus the flexibility of a programmable digital system. The proposed comparator employs some microcontroller peripherals without consuming execution time of the control algorithm and without requiring interruption management. It provides variable hysteresis width to obtain constant switching frequency in sliding-mode strategies and can be used in any type of hard switching converter. The dynamic performance of the method is verified experimentally in a boost converter-based rectifier with power factor correction and output voltage regulation in one single stage. The boost converter operates in sliding mode with constant switching frequency and results in a total harmonic distortion of the input current <;1%.
    Thematic Areas: Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    ISSN: 17554535
    Author's mail: enric.vidal@urv.cat hugo.valderrama@urv.cat
    Author identifier: 0000-0002-6016-4096 0000-0003-2892-8209
    Record's date: 2024-09-07
    Papper version: info:eu-repo/semantics/publishedVersion
    Link to the original source: https://ietresearch.onlinelibrary.wiley.com/doi/full/10.1049/iet-pel.2016.1001
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: Iet Power Electronics. 11 (5): 787-795
    APA: Bosque-Moncusi J, Valderrama-Blavi H, Flores-Bahamonde F, Vidal-Idiarte E, Martínez-Salamero L (2018). Using low-cost microcontrollers to implement variable hysteresis-width comparators for switching power converters. Iet Power Electronics, 11(5), 787-795. DOI: 10.1049/iet-pel.2016.1001
    Article's DOI: 10.1049/iet-pel.2016.1001
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2018
    Publication Type: Journal Publications
  • Keywords:

    Electrical and Electronic Engineering,Engineering, Electrical & Electronic
    Engineering, electrical & electronic
    Engenharias iv
    Engenharias iii
    Electrical and electronic engineering
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