Signal flow graphs for modelling of switching converters with reduced redundant power processing

This study presents a procedure for modelling of switching converters with reduced redundant power processing (R²P²). This class of converters consists of two basic DC-DC switching converters connected in non-cascading structure. The proposed procedure uses signal flow graphs on converters with R²P², according to currents and voltages relationship of each non-cascading structure. In the beginning, the procedure does not require specific knowledge of the basic converters being used, but only the structure of the converter with R²P². The corresponding basic converters are incorporated later. Although the procedure is applied to converters with R²P², it can also be applied to other configurations that are based on the interconnection of two converters. The resulting models are validated using simulations and experimental results.