Autor según el artículo: El Aroudi A., Garcia G., Al Hosani K., Al Sayari N., Al-Numay M.

Departamento: Enginyeria Electrònica, Elèctrica i Automàtica

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

Palabras clave: Switched mode power supplies Subharmonic oscillation Stability analysis Power electronics Dc-dc power conversion Dc-dc converter Circuit stability

Resumen: Two main methods for controlling switching converters exist in the literature. The direct one is the voltage mode control, which suffers from some disadvantages such as slow response to load variations and an input voltage-dependent total loop gain. The current mode control can overcome these problems but at the expense of extra cost and more complex control design. V1 concept is a new promising control technique for designing voltage mode control of buck-type converters with an optimal response similar to current mode control. In this paper, the dynamics and the stability of buck converters under V1 control are studied. In particular, subharmonic oscillation limits in the parameter space are addressed. First, a closed-loop state-space model is derived and then used to formulate an analytical matrix-form expression for predicting the stability limit of the system. Using this expression, multi-parametric stability boundaries are obtained. It is shown that the equivalent series inductance of the output capacitor can narrow the stability region. It is also demonstrated that the integral action in the feedback loop of a V1-controlled buck converter has a negligible effect on the subharmonic oscillation boundary. The theoretical analysis is validated through numerical simulation of the circuit-level switched model of the system.

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/submittedVersion

Enlace a la fuente original: https://onlinelibrary.wiley.com/doi/10.1002/cta.2338

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. 45 (11): 1686-1700

Referencia de l'ítem segons les normes APA: El Aroudi A., Garcia G., Al Hosani K., Al Sayari N., Al-Numay M. (2017). Analytical multi-parametric stability boundaries of DC-DC buck converters under V1 control concept. International Journal Of Circuit Theory And Applications, 45(11), 1686-1700. DOI: 10.1002/cta.2338

DOI del artículo: 10.1002/cta.2338

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2017

Tipo de publicación: Journal Publications