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Nonaveraged control‐oriented modeling and relative stability analysis of DC‐DC switching converters - imarina:5132876

Autor/es de la URV:El Aroudi Chaoui, Abdelali
Autor según el artículo:Al-Turki Y., El Aroudi A., Mandal K., Giaouris D., Abusorrah A., Al Hindawi M., Banerjee S.
Direcció de correo del autor:abdelali.elaroudi@urv.cat
Identificador del autor:0000-0001-9103-7762
Año de publicación de la revista:2018
Tipo de publicación:Journal Publications
ISSN:00989886
Referencia de l'ítem segons les normes APA:Al-Turki Y., El Aroudi A., Mandal K., Giaouris D., Abusorrah A., Al Hindawi M., Banerjee S. (2018). Nonaveraged control‐oriented modeling and relative stability analysis of DC‐DC switching converters. International Journal Of Circuit Theory And Applications, 46(3), 565-580. DOI: 10.1002/cta.2387
Referencia al articulo segun fuente origial:International Journal Of Circuit Theory And Applications. 46 (3): 565-580
Resumen:This paper presents a unified and exact nonaveraged approach to derive a frequency‐domain control‐oriented model for accurate prediction of the fast timescale dynamics and performances of switching converters with fixed frequency naturally sampled pulse width modulation and integrating feedback loop. Because the approach avoids averaging and approximations related to this process, a very good accuracy of the derived model is obtained. The main difference between the presented approach and the existing methodology for accurately predicting the behavior of switching converters is that, here, we break the feedback loop and we focus on analyzing the open‐loop gain and the effect of the system parameters on relative stability. This results in an approach much similar to control systems techniques rather than nonlinear dynamical system approaches. Consequently, the relative stability is tackled easily in the frequency domain. In particular, by treating the modulator as a gain depending on the operating point, the new model is formulated in such a way that standard control‐oriented tools such as Bode diagrams and root‐loci can be easily used. Therefore, the proposed approach gives some important issues like gain and phase margins that are highly useful in controller design. It is noticed that the crossover frequency, gain, and phase margins predicted by using the averaged model may deviate significantly from the actual values given by the proposed approach. The paper points out the sources of discrepancies and the theoretical results are validated by simulations using a circuit‐level switched model.
DOI del artículo:10.1002/cta.2387
Enlace a la fuente original:https://onlinelibrary.wiley.com/doi/abs/10.1002/cta.2387
Versión del articulo depositado:info:eu-repo/semantics/acceptedVersion
Acceso a la licencia de uso:https://creativecommons.org/licenses/by/3.0/es/
Departamento:Enginyeria Electrònica, Elèctrica i Automàtica
URL Documento de licencia:https://repositori.urv.cat/ca/proteccio-de-dades/
Áreas temáticas:Engineering, electrical & electronic
Engenharias iv
Electronic, optical and magnetic materials
Electrical and electronic engineering
Computer science applications
Astronomia / física
Applied mathematics
Palabras clave:Switching converters
Stability analysis
Pwm control
Nonaveraged modeling
Control-oriented modeling
Entidad:Universitat Rovira i Virgili
Fecha de alta del registro:2024-09-07
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