Study of Equilibrium Point Qualitative Behaviors in DC-DC Converters

The behavior of non-linear systems around the equilibrium points can be classified into stable or unstable node, stable or unstable focus, saddle point and limit cycle. In most cases, these behaviors can be established from the poles of the linear approximation around a given equilibrium point. In t...

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Published in2019 IEEE International Autumn Meeting on Power, Electronics and Computing (ROPEC) pp. 1 - 6
Main Authors Valdes-Delgado, Diana C., Gomez-Saavedra, Carlos A., Valdez-Carrera, Hector O., Sosa, Jose M., Limones-Pozos, Cesar A., Vazquez-Guzman, Gerardo, Lopez, Adolfo R.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2019
Subjects
Buck converters
Capacitors
Inductors
Integrated circuit modeling
Switches
Voltage control
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Summary:The behavior of non-linear systems around the equilibrium points can be classified into stable or unstable node, stable or unstable focus, saddle point and limit cycle. In most cases, these behaviors can be established from the poles of the linear approximation around a given equilibrium point. In this paper the analysis of focus and node qualitative behaviors of DC-DC power electronics converters around a given equilibrium point is studied. Open-loop and closed-loop dynamics are considered. Three different laboratory prototypes of the converters are used, namely, an interleaved buck, an interleaved boost and a double buck with an inductor-capacitor input filter. These prototypes and analysis were used as an aid to study typical equilibrium point behaviors as an introduction to a non-linear system graduate course.
ISSN:2573-0770
DOI:10.1109/ROPEC48299.2019.9057137