Abstract—The inverters are becoming one of the resources in many industries and enterprises for power quality and Uninterrupted Power Supply (UPS). The three-phase inverter with six switches is the main implementation circuit in any UPS system. But this inverter supplies harmonics to the load. Due to harmonics, the loss is high. So the multilevel inverters are used in the place of all the three-phase inverter. The multilevel inverter reduces the harmonics. The number of steps increase reduces the number of harmonics in the output. Number of increase in switch creates complications. In this work, reduced switch, increased level multi-level inverter is compared with cascaded H-Bridge multilevel inverter using fundamental switching technique. The various levels of multi-level inverter can be implemented with proposed strategy. The simulation is carried out using Matlab software.

Index Terms—Cascaded H-bridge, Multilevel dc link inverter, Pulse width modulation, Total harmonic distortion

Cite: Dinesh Kumar S B and Satisha K, "NEW MULTILEVEL INVERTER TOPOLOGY WITH DECREASED NUMBER OF SWITCHES," International Journal of Electrical and Electronic Engineering & Telecommunications, Vol. 1, No. 1, pp. 190-195, March 2015.