Implementation of single phase neutral point clamped grid connected inverter with open switch fault detection and correction

The main aim of our project is to implement the 5 level neutral point clamped (NPC) inverter output using three terminal topology (3T) with open switch fault detection. Normally the grid coupled inverters to reduce the common mode leakage current we use the NPC inverter. In this type we need more number of components and to achieve the five level output. In our proposed system we use the 3T converter to achieve the 5 level output at reduced number of switches. In experimental result we use 5 level 3T converter with 4 switches. And achieve the THD at below 5% and correct the open switch fault in this system.