Solid State Transformer based on cascade multilevel converter for distribution network

Abstract

Solid State Transformer (SST), a power electronics based transformer, tends to replace conventional bulk size transformer for distribution of electric power. In this paper a SST has been designed in which cascading has been done for interfacing high voltage power using low power switching devices. Pulse Width Modulation (PWM) has been used for switching technique. The configuration has been simulated in MATLAB Simulink software and its performance at different stage has been shown. Results shows that voltage and current stress is equal to each bridge.