Autor según el artículo: Al-Turki Y., El Aroudi A., Mandal K., Giaouris D., Abusorrah A., Al Hindawi M., Banerjee S.

Departamento: Enginyeria Electrònica, Elèctrica i Automàtica

Autor/es de la URV: El Aroudi Chaoui, Abdelali

Palabras clave: Switching converters Stability analysis Pwm control Nonaveraged modeling Control-oriented modeling

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.

Áreas temáticas: Engineering, electrical & electronic Engenharias iv Electronic, optical and magnetic materials Electrical and electronic engineering Computer science applications Astronomia / física Applied mathematics

Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/

ISSN: 00989886

Direcció de correo del autor: abdelali.elaroudi@urv.cat

Identificador del autor: 0000-0001-9103-7762

Fecha de alta del registro: 2023-02-18

Versión del articulo depositado: info:eu-repo/semantics/acceptedVersion

Enlace a la fuente original: https://onlinelibrary.wiley.com/doi/abs/10.1002/cta.2387

URL Documento de licencia: http://repositori.urv.cat/ca/proteccio-de-dades/

Referencia al articulo segun fuente origial: International Journal Of Circuit Theory And Applications. 46 (3): 565-580

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

DOI del artículo: 10.1002/cta.2387

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2018

Tipo de publicación: Journal Publications