International Journal of Information Science and Intelligent System, Vol. 2, No.3, 2013 New Topology of Multilevel Inverter with Reduced Switch Count C.R.Balamurugan 1,  , S.P.Natarajan 2, , M.Arumugam 3 1&3 Arunai Engineering College, Tiruvannamalai, India 2 Annamalai University, Chidambaram, India Received: 23 July 2013; Accepted: 12 September 2013 Abstract The multi level inverter system is mostly used in ac drives, when both reduced harmonic contents and high power are required. In this paper a new topology of multilevel inverter is introduced. This type has many steps with less power electronic switches. Due to the less number of switches the cost of the inverter is very less and also less installation area is required. Firstly, we describe briefly the structural parts of the inverter then switching strategy and operational principles of the proposed inverter are explained and operational topologies are given. Simulation is performed using MATLAB SIMULINK. Various inverted sine carrier PWM techniques are applied to the circuit such as ISCPDPWM, ISCPODPWM, ISCAPODPWM, ISCVFPWM and ISCCOPWM. By comparing among the ISCPWM techniques, ISCPDPWM provide the less THD value and ISCCOPWM provide a higher fundamental RMS output voltage. Keywords: ISCPDPWM; ISCPODPWM; ISCAPODPWM; ISCVFPWM; ISCCOPWM;THD ©Martin Science Publishing. All Rights Reserved. 1. Introduction The multilevel inverter [MLI] is used for high voltage and high power applications. This inverter make staircase (stepped) waveform from several different levels of DC voltage. It have inferior voltage rating of devices, low harmonics distortion, high power quality waveforms, lower switching frequency and losses, higher efficiency, reduction of dv/dt stresses. Because of the above characteristics, it have a prospect of working with low speed semiconductors if its compared with the two level inverters. Many number of MLI topology are available but generally popular MLI topology is diode clamped, flying capacitor and cascaded multilevel Inverter. Aghdam [1] et al made an analysis of multi-carrier PWM  Corresponding author. E-mail address: crbalain2010@gmail.com (C.R.Balamurugan).