Articles producció científica> Enginyeria Electrònica, Elèctrica i Automàtica

Prediction of subharmonic oscillation in switching regulators: from a slope to a ripple standpoint

  • Identification data

    Identifier: imarina:9297721
    Authors:
    El Aroudi, AAl-Numay, MCalvente, JGiral, RRodriguez, EAlarcon, E
    Abstract:
    New exact critical conditions for predicting subharmonic instability in switching regulators are approximated by simple design-oriented expressions valid under practical conditions. These simplified expressions contain the ripple and slope information of the feedback control signal. Depending on the converter topology, the controller used and values of parasitic parameters, either the slope or the ripple can be dominant in predicting instability. A discussion on the validity of this interpretation is illustrated through six different examples of switching regulators using the concept of the spectral radius and the relative degree of the system loop. Using this approach, the boundary between the desired stable region and the subharmonic instability can be easily obtained. The theoretical results are validated by means of numerical simulations.
  • Others:

    Author, as appears in the article.: El Aroudi, A; Al-Numay, M; Calvente, J; Giral, R; Rodriguez, E; Alarcon, E
    Department: Enginyeria Electrònica, Elèctrica i Automàtica
    URV's Author/s: Calvente Calvo, Francisco Javier / Cid Pastor, Angel / El Aroudi Chaoui, Abdelali / Giral Castillon, Roberto
    Keywords: Subharmonic oscillation Stability analysis Stability Models Dc–dc converters Dc-dc converters Dc-dc converter Converters
    Abstract: New exact critical conditions for predicting subharmonic instability in switching regulators are approximated by simple design-oriented expressions valid under practical conditions. These simplified expressions contain the ripple and slope information of the feedback control signal. Depending on the converter topology, the controller used and values of parasitic parameters, either the slope or the ripple can be dominant in predicting instability. A discussion on the validity of this interpretation is illustrated through six different examples of switching regulators using the concept of the spectral radius and the relative degree of the system loop. Using this approach, the boundary between the desired stable region and the subharmonic instability can be easily obtained. The theoretical results are validated by means of numerical simulations.
    Thematic Areas: Planejamento urbano e regional / demografia Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering Ciência da computação
    licence for use: https://creativecommons.org/licenses/by/3.0/es/
    Author's mail: roberto.giral@urv.cat angel.cid@urv.cat abdelali.elaroudi@urv.cat javier.calvente@urv.cat
    Author identifier: 0000-0001-6582-6741 0000-0001-8124-6210 0000-0001-9103-7762 0000-0001-8012-1889
    Record's date: 2024-10-12
    Papper version: info:eu-repo/semantics/acceptedVersion
    Link to the original source: https://www.tandfonline.com/doi/abs/10.1080/00207217.2016.1178342
    Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
    Papper original source: International Journal Of Electronics. 103 (12): 2090-2109
    APA: El Aroudi, A; Al-Numay, M; Calvente, J; Giral, R; Rodriguez, E; Alarcon, E (2016). Prediction of subharmonic oscillation in switching regulators: from a slope to a ripple standpoint. International Journal Of Electronics, 103(12), 2090-2109. DOI: 10.1080/00207217.2016.1178342
    Article's DOI: 10.1080/00207217.2016.1178342
    Entity: Universitat Rovira i Virgili
    Journal publication year: 2016
    Publication Type: Journal Publications
  • Keywords:

    Electrical and Electronic Engineering,Engineering, Electrical & Electronic
    Subharmonic oscillation
    Stability analysis
    Stability
    Models
    Dc–dc converters
    Dc-dc converters
    Dc-dc converter
    Converters
    Planejamento urbano e regional / demografia
    Engineering, electrical & electronic
    Engenharias iv
    Engenharias iii
    Electrical and electronic engineering
    Ciência da computação
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