A new cascaded H-bridge multilevel inverter with reduced switch count

This script recommends a new module for cascaded multi-level inverter. It utilizes reduced number of switches with higher number of output steps. Due to less switches, driver circuits, conduction losses and switching losses are minimized. By attaching several modules in series configuration we obtain desired number of output levels. The projected MLI structure includes series connected modules and one supplementary block generates only all un idirectional positive voltage. To get bidirectional voltage an H-Bridge is connected. In this script proposed MLI employs SPWM strategy. In general L level multi carrier SPWM requires (L-l) carriers. But i η proposed topography only (L+l/2) carriers are sufficient. Due to less usage of carriers controlling circuit becomes less complex, size and installation cost also reduces.