| ABSTRACT |
This three phase multilevel inverter can be use to convert DC to AC power. This inverter convert power in multilevel voltage steps with single or multiples switching to improve the power quality, lower switching losses, improve the electromagnetic compatibility and increase the voltage capability. The topology use in this inverter is cascaded H-Bridge and the power switch is MOSFET. With this topology the different renewable energy can be use simultaneously. Particle Swarm Optimization (PSO) was used to calculate the switching angles in order to eliminate the harmonic. With this switching angles harmonic up to 49th order are eliminated. This three phase multilevel inverter also offer selected voltage level. The voltage level can be selected 3, 5, 7 or 9. These inverters also offer selected frequency from 10Hz to 120Hz.
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