• Raja Sekhar Reddy
• Dr.P.Muthu Kumar

This research presents an optimum nine level multilevel inverter by using different fashion of switch and source combination. Multilevel inverter is a proved method to avoid the filter requirements or size of the filter can be reduced. In this technique, two kind of circuit designs has been used, one for inversion purpose and another one is used for level decider. The level decider circuit comprises of 4 number of sources with a fixed voltage, 4 IGBT switches and 4 diodes. The inversion circuit is a normal H Bridge comprises of 4 switches and load.In between the each level high frequency PWM also incorporated which aims to decrease the fundamental. The MATLAB based nine level single phase inverter is tested with R load and reported less THD at the end of the paper.

: Multilevel inverter, Pulse width modulation, Total harmonic distortion

"NINE LEVEL MULTILEVEL INVERTER BY USING MATLAB", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 6, page no.611-616, June 2019, Available :http://www.jetir.org/papers/JETIR1907H89.pdf

"NINE LEVEL MULTILEVEL INVERTER BY USING MATLAB", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 6, page no. pp611-616, June 2019, Available at : http://www.jetir.org/papers/JETIR1907H89.pdf