AC-AC modular multilevel converter applied to solid-state transformers

Currently, with the tendency of the smart grids in the power line distribution, the solid-state transformer become a suitable solution for this kind of the application. Several researchers are developing solid-state transformers in electric traction applications in order to reduce size and weight of traditional 50/60 Hz transformers. However there are studies in the area of smart grids. This paper presents the initial development of a the solid-state transformer applied to rural power line distribution aiming improve the power quality and meet the loads for higher power of rural consumers using a versatile single-phase to three-phase structure of solid-state transformer. This study deals with the analysis and implementation of the AC-AC modular multilevel converter applied as a part of the structure of solid-state transformer. This work presents a 1 kW AC-AC modular multilevel converter development. Simulation and experimental results for a scaled 0.7 kW prototype are presented.