Design and Performance Analysis of Solid-State Transformer

Abstract

The recent innovations in the field of power electronic industries have led to advancements in high power converters and their usage in the modern grid. This trend focused on the interconnection of power converters with solid-state transformer (SST). Since it is capable of controlling power flow in the power system, it is seen as a potential technology which can replace the conventional transformers that are used today. SST consists of power electronic switches interconnected with a high frequency transformer (HFT). The usage of HFT reduces the size and volume of the SST. A suitable controller can upgrade the performance of SST under different operating conditions. This paper proposes a novel control strategy for SST with a reduced number of converter stages and also discusses the design of the HFT. The results show that the SST will enhance power flow from the source to the grid.