Three phase 27Level inverter with Single DC source

It gives three phase output voltage of 27Levels with single DC input.

It gives three phase output voltage of 27Levels. Usually mulitlevel inverter needs more number of DC source. But here the single DC source used with multi winding transformer. The level shift multicarrier PWM allows to obtain the desired number of voltage and frequency.The model can be used for the applications like drives, inverter etc.,