Autor segons l'article: Kaoubaa, Karama; Pelaez-Restrepo, J; Feki, M; Robert, B G M; El Aroudi, A
Departament: Enginyeria Electrònica, Elèctrica i Automàtica
Autor/s de la URV: El Aroudi Chaoui, Abdelali
Paraules clau: Zero currents Time-domain waveforms Theoretical result Switching devices Subharmonics Static error Static and dynamic performance Start-ups Stability regions Settling time Proportional controller Prediction tools Pi controller Nonlinear analysis Multicell Multi-cell converter Lyapunov stability theory Lyapunov stability Load currents Dynamic tdfc Dynamic controller Digital control systems Digital control Dc-dc buck converter Cytology Controllers Circuit-based models Cells Bifurcation diagram Bifurcation (mathematics)
Resum: Multi-cell converters have been developed to overcome shortcomings in usual switching devices. The control system in these circuits is twofold: first, to balance voltages of the switches and second to regulate the load current to a desired value. However, with a purely proportional controller, the system presents a static error. With a PI controller the static error is annihilated, but at the expense of shortening the stability region and increasing settling time. In this work, a zero static error dynamic controller for a two-cell DC-DC buck converter is designed. To achieve zero current error, we propose a generalized scheme of a dynamic controller. Then, using nonlinear analysis and Lyapunov stability theory and bifurcation prediction tools, we prove that zero static error is achieved. The proposed controller outperforms the PI controller in terms of settling time in the presence of saturating effect during the start-up transients. Numerical simulations in the form of time domain waveforms and bifurcation diagrams from switched circuit-based model are presented to confirm our theoretical results. Copyright © 2010 John Wiley & Sons, Ltd.
Àrees temàtiques: Engineering, electrical & electronic Engenharias iv Electronic, optical and magnetic materials Electrical and electronic engineering Computer science applications Astronomia / física Applied mathematics
Accès a la llicència d'ús: https://creativecommons.org/licenses/by/3.0/es/
Adreça de correu electrònic de l'autor: abdelali.elaroudi@urv.cat
Identificador de l'autor: 0000-0001-9103-7762
Data d'alta del registre: 2024-10-12
Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
Enllaç font original: https://onlinelibrary.wiley.com/doi/abs/10.1002/cta.735
URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
Referència a l'article segons font original: International Journal Of Circuit Theory And Applications. 40 (4): 395-407
Referència de l'ítem segons les normes APA: Kaoubaa, Karama; Pelaez-Restrepo, J; Feki, M; Robert, B G M; El Aroudi, A (2012). Improved static and dynamic performances of a two-cell DC-DC buck converter using a digital dynamic time-delayed control. International Journal Of Circuit Theory And Applications, 40(4), 395-407. DOI: 10.1002/cta.735
DOI de l'article: 10.1002/cta.735
Entitat: Universitat Rovira i Virgili
Any de publicació de la revista: 2012
Tipus de publicació: Journal Publications