Modelling and analysis of the coupled-inductor Ćuk converter

Abstract

Small-signal model of coupled-inductor Ćuk converter including parasitic minding resistances is derived, and its essential network functions are presented. The basic model is transformed into an easy to use simplified form with analytic expressions for the zeros and poles locations. The dynamic properties of two practically important cases of inductor coupling are discussed and conditions for minimum-phase frequency response are examined.