Shifting nonlinear phenomena in a DC–DC converter using a fuzzy logic controller

The occurrence of nonlinear phenomena in DC–DC power converters makes their analysis and control difficult. We propose a converter model that takes into account the internal resistances of the converter elements. A fuzzy logic controller is then used to shift the nonlinear phenomena outside the operating domain, and to ensure current regulation over a wide range of parameters. To validate the achieved performance, a comparative study is presented.