Author, as appears in the article.: El Aroudi, Abdelali; Calvente, Javier; Giral, Roberto; Al-Numay, Mohammed S; Martinez-Salamero, Luis
Department: Enginyeria Electrònica, Elèctrica i Automàtica
URV's Author/s: Calvente Calvo, Francisco Javier / El Aroudi Chaoui, Abdelali / Giral Castillon, Roberto / Martínez Salamero, Luis
Keywords: Switching systems Switching converter Switching circuits Switching Switched converters Subharmonic oscillations Subharmonic instability Stability criteria Stability analysis Power converters High switching frequencies Electric inverters Dc-dc power converters Dc-dc converters Dc-dc converter Current mode control Continuous conduction mode Bandwidth Additional filters
Abstract: Subharmonic oscillation is widely studied in switching converters under current mode control (CMC). Its boundary of occurrence in the design parameter space is well known in the case of an infinite-bandwidth current sensor. However, in a practical implementation, either a limited-bandwidth current sensor or an additional filter is used. This could have an effect on the system dynamics particularly for relatively high switching frequencies. This paper discusses the effect of the additional dynamics due to the finite-bandwidth current sensor or the additional filter on the stability and subharmonic oscillation boundaries in switching converters under CMC. It is shown that a simplified model, taking into account the dynamics of the inductor current and the sensor/filter, is enough to obtain accurate results concerning the prediction of the occurrence of subharmonic instabilities in switched converters. Design-oriented equations describing the occurrence of subharmonic oscillations are used to show some problems related to the additional dynamics on the ramp compensator design in a single-switch dc-dc converter working in continuous conduction mode. Some proposed solutions are also discussed. Numerical simulations and experimental measurements corroborate the theoretical predictions. © 2016 IEEE.
Thematic Areas: Interdisciplinar Instruments & instrumentation Engineering, electrical & electronic Engenharias iv Engenharias iii Electrical and electronic engineering Control and systems engineering Computer science applications Ciência da computação Automation & control systems
licence for use: https://creativecommons.org/licenses/by/3.0/es/
Author's mail: roberto.giral@urv.cat abdelali.elaroudi@urv.cat javier.calvente@urv.cat
Author identifier: 0000-0001-6582-6741 0000-0001-9103-7762 0000-0001-8012-1889
Record's date: 2024-10-12
Papper version: info:eu-repo/semantics/acceptedVersion
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Papper original source: Ieee Transactions On Industrial Electronics. 63 (8): 4826-4837
APA: El Aroudi, Abdelali; Calvente, Javier; Giral, Roberto; Al-Numay, Mohammed S; Martinez-Salamero, Luis (2016). Boundaries of Subharmonic Oscillations Associated with Filtering Effects of Controllers and Current Sensors in Switched Converters under CMC. Ieee Transactions On Industrial Electronics, 63(8), 4826-4837. DOI: 10.1109/TIE.2015.2458966
Entity: Universitat Rovira i Virgili
Journal publication year: 2016
Publication Type: Journal Publications
Repositori URV