An Isolated 3 Phase Multilevel Inverter for PV Cell Applications

This study presents a novel topology for multilevel inverters so called cascaded transformer inverter (CTRSI). This topology consists of one DC source and several single-phase transformers. Each single-phase transformers generates three levels with four semiconductor switches and only two switches for all transformers alter the direction of single DC source. Whereas each single-phase transformers in conventional cascaded transformer multilevel inverter includes more switches. Hence, CTRSI has the advantage of a reduced number of components compared with conventional cascaded transformer multilevel inverter. Simulation results carried out by MATLAB/SIMULINK. The results show that the proposed inverter topology is able to reach high-quality output voltages. THD of output voltage is verified using FFT analysis tool