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: FLORES BAHAMONDE, FREEDDY ARTURO / 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: hugo.valderrama@urv.cat enric.vidal@urv.cat

Author identifier: 0000-0003-2892-8209 0000-0002-6016-4096

Record's date: 2023-02-18

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: http://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