Paper Title
A Cascaded H-Bridge Converter Instigated For A Solid-State Transformer To Restrain Voltage And Power Balance

In this Project, the designing of the SST, including ac/dc rectifier, dual active bridge (DAB) converters are developed. The solid-state transformer (SST) is an interconnection device between ac distribution grids and dc distribution systems. The SST has a cascaded multilevel ac/dc rectifier stage, a dual active bridge (DAB) converter stage with high- frequency transformers, and an obligatory dc/ac stage. On the other hand, due to dc-link voltage and power unbalance in the cascaded modules, the unbalanced dc-link voltages and power intensify the pressure of the semiconductor devices and set off overvoltage or over-current issues.