Modified hybrid symmetrical multilevel inverter

Even more the needs of efficiency and productivity are required in industrial processes. Medium and high voltage inverter topologies are used in high scale industrial processes to achieve these goals. This work presents two variants of a modified hybrid symmetrical multilevel inverter topology based in [8] using Half Bridge commutation cells, proper to use in medium voltage levels. These topologies are able to create a 7-level phase-voltage waveform and a 13-level line-voltage waveform. A reduction in the number of switches and isolated sources is achieved when compared to traditional multilevel topologies, specially the cascaded topologies. A low power prototype was assembled using a programmable device (FPGA) and a modular platform developed to test new topologies.