Exploration of bifurcation and inherent oscillation in a current mode controlled Ćuk converter - effects of turn-on and turn-off switching delays Online publication date: Mon, 31-Oct-2022
by Sukanya Parui; Biswarup Basak
International Journal of Power Electronics (IJPELEC), Vol. 16, No. 4, 2022
Abstract: The nonlinear phenomena in a dc-dc current mode controlled Ćuk converter circuit have been explored. In reality, as any switching process is associated with turn-on and turn-off delays, the simulation has been extended considering these delays. The circuit exhibits a LC oscillation which may make the switch current oscillatory and in some cases the conclusion obtained from the bifurcation diagram regarding the dynamics of the system becomes incorrect. A mathematical expression for the oscillation frequency has been presented. A prototype of the converter has been developed. The simulated results have been verified experimentally.
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