Performance analysis of modular converter for solid state transformers

This paper proposes a performance analysis of a modular topology applied to solid state transformers regarding the conduction losses in the converters. The modular concept presents high reliability in medium and high voltage applications. However, the definition of the number of modules for one specific application is a difficult task. The full analysis of the semiconductors conduction losses for a module with a cascade multilevel, a dual active bridge and a full bridge inverter is presented. An algorithm that returns the lowest losses for n number of cells is developed.