Título Control of Power Converters With Hybrid Affine Models and Pulse-Width Modulated Inputs
Autores Albea, Carolina , Sferlazza, Antonino , Gordillo, Francisco , GÓMEZ-ESTERN AGUILAR, FABIO
Publicación externa No
Alcance Article
Naturaleza Científica
Cuartil JCR 2
Cuartil SJR 1
Impacto JCR 4.14
Impacto SJR 1.344
Web https://www.scopus.com/inward/record.uri?eid=2-s2.0-85107346257&doi=10.1109%2fTCSI.2021.3083900&partnerID=40&md5=b50a0add831c8c44d94e0b2a1bfa776b
Fecha de publicacion 01/08/2021
ISI 000673472700032
Scopus Id 2-s2.0-85107346257
DOI 10.1109/TCSI.2021.3083900
Abstract In this paper, hybrid dynamical systems theory is applied to the analysis and control of switched converters with Pulse-Width Modulated (PWM) inputs. The system is described by a state-space model with continuous flows and discrete jumps, without averaged equations. The modulation effects are captured in full without using time-dependent signals, by enlarging the state vector to include the PWM waveform generation process. Furthermore, the sample-and-hold mechanism associated with the sampling frequency is also taken into account with this approach. A control law is proposed based on a Lyapunov function candidate. Furthermore, convergence sets and the steady state jitter, inherent to PWM-based controllers, are analyzed estimating limit sets for the augmented state. Consequently, output chattering can be bounded. By using hybrid dynamical system theory, the control designer gains a deeper understanding of the effect of modulation in the closed-loop dynamics, avoiding the problems associated with the use averaged models. Experimental results validate the proposed method.
Palabras clave Pulse width modulation; Switches; Modulation; Mathematical model; Computational modeling; Matrix converters; Convergence; Converter control; PWM; hybrid dynamical system; Lyapunov analysis
Miembros de la Universidad Loyola

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