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On the elimination of nonlinear phenomena in DC/DC converters using type-2 fuzzy logic controller

Gozim D., Guesmi K., Mahi D.

Diagnostyka

2018

Vol. 19, No. 3

73--80

DC/DC converters are wealthy of nonlinear phenomena that appear when the converter parameters are subject to perturbation or variation. The converter may exhibit bifurcation from behavior to another, quasi periodic and chaotic responses. In such cases, it is difficult and even impossible to analyze, to predict and to control the converter behavior. This paper gives a description of a DC/DC converter and shows their desirable and undesirable behaviors; then a solution, based on type-2 fuzzy logic controller, is proposed to eliminate the undesirable behaviors and to enhance the converter dynamics.

On the enhancement of DC-DC converters nonlinear behaviors

Gozim D., Guesmi K., Mahi D.

Przegląd Elektrotechniczny

2013

R. 89, nr 7

45--49

Power electronics circuits are rich in nonlinear dynamics. They are characterized by cyclic switching between a finite number of the circuit topologies, which gives rise to a variety of nonlinear behaviors. This paper gives an overview on some chaotic dynamics and bifurcation scenarios that complicate and even make impossible the analysis and the control of such processes. Then a solution, based on optimized PI, is proposed to suppress the occurring nonlinear phenomena in a DC-DC converter.

W artykule zaprezentowano różne scenariusze zakłóceń dynamicznych przekształtników DC-DC. Przedstawiono metody korekcji tych nieliniowych zjawisk dynamicznych.