Autor según el artículo: Madrid E; Murillo-Yarce D; Restrepo C; Muñoz J; Giral R
Departamento: Enginyeria Electrònica, Elèctrica i Automàtica
Autor/es de la URV: Giral Castillon, Roberto
Palabras clave: Pwm converters High-order switched converters Full-order dynamic models Discontinuous conduction mode implementation hybrid high-order switched converters full-order dynamic models
Resumen: High-order switched DC-DC converters, such as SEPIC, Ćuk and Zeta, are classic energy processing elements, which can be used in a wide variety of applications due to their capacity to step-up and/or step-down voltage characteristic. In this paper, a novel methodology for analyzing the previous converters operating in discontinuous conduction mode (DCM) is applied to obtain full-order dynamic models. The analysis is based on the fact that inductor currents have three differentiated operating sub-intervals characterized by a third one in which both currents become equal, which implies that the current flowing through the diode is zero (DCM). Under a small voltage ripple hypothesis, the currents of all three converters have similar current piecewise linear shapes that allow us to use a graphical method based on the triangular shape of the diode current to obtain the respective non-linear average models. The models’ linearization around their steady-state operating points yields full-order small-signal models that reproduce accurately the dynamic behavior of the corresponding switched model. The proposed methodology is applicable to the proposed converters and has also been extended to more complex topologies with magnetic coupling between inductors and/or an RC damping network in parallel with the intermediate capacitor. Several tests were carried out using simulation, hardware-in-the-loop, and using an experimental prototype. All the results validate the theoretical models.
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Acceso a la licencia de uso: https://creativecommons.org/licenses/by/3.0/es/
Direcció de correo del autor: roberto.giral@urv.cat
Identificador del autor: 0000-0001-6582-6741
Fecha de alta del registro: 2024-07-27
Versión del articulo depositado: info:eu-repo/semantics/publishedVersion
Enlace a la fuente original: https://www.mdpi.com/1424-8220/21/22/7434
URL Documento de licencia: https://repositori.urv.cat/ca/proteccio-de-dades/
Referencia al articulo segun fuente origial: Sensors. 21 (22):
Referencia de l'ítem segons les normes APA: Madrid E; Murillo-Yarce D; Restrepo C; Muñoz J; Giral R (2021). Modelling of sepic, Ćuk and zeta converters in discontinuous conduction mode and performance evaluation. Sensors, 21(22), -. DOI: 10.3390/s21227434
DOI del artículo: 10.3390/s21227434
Entidad: Universitat Rovira i Virgili
Año de publicación de la revista: 2021
Tipo de publicación: Journal Publications