Generation of isolated DC voltage sources for multilevel inverters

Electrical energy plays a vital role in the life of mankind due to extensive use of electronic devices and electrical machinery. To provide green energy to user, renewable energy got more importance. Conventionally, renewable energy was used in standalone systems which need heavy capital investment along with high maintenance cost and separate infra-structure. Meanwhile the trend has been changed and the grid tie inverters got into the systems. There are many issues in finding a suitable grid tie inverter because it needs high power inverters. The latest technique for inverter of high power and low total harmonic distortion is Multilevel Inverter. There are many inverters designing topologies of Multilevel Inverters. One of the most popular among these topologies is Cascaded H-Bridge Multilevel Inverter. But this topology comes with a limitation that it needs isolated DC voltage sources. In our research, we have focused on the topology to overcome this issue in case when there is a single available DC voltage source. Our research shows that this DC source can easily be split into a number of isolated DC Sources as per desire by using less in system losses, small size and weight of the converter. The design has been demonstrated by simulation and verified by hardware implementation.