Signal Flow Graphs for Modelling of Switching Converters with Reduced Redundant Power Processing

R Loera-Palomo J.A. Morales-Saldaña J. Leyva-Ramos
ET Power Electron., 2012, Vol. 5, Iss. 7, pp. 1008-1016. doi: 10.1049/iet-pel.2012.0038 , 2012.


This study presents a procedure for modelling of switching converters with reduced redundant power processing(R2 P2 ). 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 R2 P2 , 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 R2 P2 . The corresponding basic converters are incorporated later. Although the procedure is applied to converters with R2 P2 , 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.