Interfacing renewable resources with the grid requires a power inverter that meets with the increasing demand of power and its quality related to reduced harmonic distortion. In relation to which multilevel inverters (MLI) have been gaining more consideration for medium voltage high power applications. In this work, a MLI using an embedded type switched boost inverter is studied with their basic performance parameters derived from its basic topology. The model is then simulated using a multicarrier modulation in MATLAB to prove its advantage over the existing topologies.

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Extensive study over Z-source inverter (ZSI) has been pursued for years to compensate the drawbacks of the conventional converters. Single stage (one-step) conversion with buck-boost characteristics was the primary features for its wide usage. But presence of passive elements may prove to be a disadvantage as the size of the converter increases along with its ratings. Modifications on such converters leading to different topologies have been discussed briefly in this paper. The comparative study based on reduced passive elements and better gain is done to obtain an optimal converter structure.