Nonlinear phenomena in DC-DC buck converter by means of iteration mapping technique
by Ahmad M. Harb; Souhib M. Harb
International Journal of Power Electronics (IJPELEC), Vol. 6, No. 4, 2014

Abstract: In this paper, the nonlinear phenomenon in DC/DC buck converter is studied. A practical design for a DC/DC buck converter was considered in this study, which results in a more comprehensive understanding for the phenomenon. The nonlinearity of the buck converter is studied using the iteration mapping technique. The results showed that if the system has a well-designed buck converter as well as a feedback controller, then it does not exhibit any nonlinear behaviour. To verify these results, a buck converter, with non-practical parameters, was also studied. In this case, the results showed bifurcation and then chaotic behaviour for the output voltage and inductor current as the input voltage changes. A comparison between the two cases is discussed in more details.

Online publication date: Thu, 12-Feb-2015

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