Modelling and analysis of super-lift converters with switching signal flow graph method

This paper presents a novel modelling and analytical method for super-lift converters based on the switching signal flow graph (SFG). The capacitor voltage-lift technique adopted in the dc/dc conversion is modeled by the proposed method. In addition, the effects caused by parasitic parameters and diodes' voltage drop are taken into account. The general guidelines for drawing switching SFG and the derivation of models are provided. With the applications to the examples, the proposed method shows the advantages of high convenience and practicability to the super-lift converters. Both the circuit simulation and experimental results are provided to support the theoretical analysis.