H-BRIDGE BASED LEVEL DOUBLING CIRCUIT FOR CASCADED H-BRIDGE MULTILEVEL INVERTERS

摘要

The present invention provides a method for increasing the number of output voltage levels using an improved multilevel inverter system. It relates to an H-bridge based level doubling circuit for cascaded H-bridge multilevel inverters. More particularly, the invention is concerned about a system, arrangement and a method comprising H-bridge circuit, which introduces binary asymmetry in the multilevel inverter resulting in almost doubling the number of levels. It provides for improvement of power quality and reduction of power filter size and cost as well as reduction in the EMI problem.