Abstract
This paper presents an implementation of hybrid multilevel inverter employing fewer components and less carrier signals when compared to conventional multilevel inverters. In the hybrid topology, to increase the performance of multilevel inverter, first positive levels are generated by using switches having high frequency and then reverse the voltage component using low frequency switches. Due to this, the complexity and overall cost for higher output voltage levels are greatly reduced. Simulation of single phase 7-level, 9-level and 11-level hybrid inverter has been performed using sinusoidal pulse width modulation (SPWM) techniques i.e., APOD and CO. Also the two techniques are compared in terms of total harmonic distortion (THD) for various modulation indices and observed to be greatly improved when compared to conventional topologies. The performance of single phase eleven level hybrid inverter is analyzed for induction motor (IM) load. Simulation is performed using MATLAB/ SIMULINK.
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