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

Departamento: Enginyeria Electrònica, Elèctrica i Automàtica

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

Palabras clave: Stability analysis High step-up conversion ratio Dc-dc power conversion Cascaded converters

Resumen: There are many applications in power electronics that demand high step‐up conversion ratio between the source and the load. A simple way of achieving such a high voltage ratio is by cascading DC-DC boost converters in a few stages. The individual converters in such a cascaded system are usually designed separately applying classical design criteria. This paper investigates the stability of the overall system of a cascade connection of two boost converters under current mode control. We first demonstrate the bifurcation behavior of the system, and it is shown that the desired periodic orbit can undergo fast‐scale period doubling bifurcation leading to subharmonic oscillations and chaotic regimes under parameter variation. The value of the intermediate capacitor is taken as a design parameter, and we determine the minimum ramp slope in the first stage required to maintain stability. It is shown that smaller capacitance values give rise to wider stability range. We explain the bifurcation phenomena using a full‐order model. Then, in order to simplify the analysis and to obtain a closed‐form expression to explain the previous observation, we develop a reduced‐order model by treating the second stage as a current sink. This allows us to obtain design‐oriented stability boundaries in the parameter space by taking into account slope interactions between the state variables in the two stages. Copyright © 2015 John Wiley & Sons, Ltd.

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.2153

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. 44 (5): 1127-1141

Referencia de l'ítem segons les normes APA: El Aroudi A., Mandal K., Giaouris D., Banerjee S., Abusorrah A., Al Hindawi M., Al-Turki Y. (2016). Fast-Scale Stability Limits of a Two-Stage Boost Power Converter. International Journal Of Circuit Theory And Applications, 44(5), 1127-1141. DOI: 10.1002/cta.2153

DOI del artículo: 10.1002/cta.2153

Entidad: Universitat Rovira i Virgili

Año de publicación de la revista: 2016

Tipo de publicación: Journal Publications