Performance Comparision between Capacitor Clamped and Hybrid Multi Level Inverters

Abstract

The ability to operate at medium and high voltages with reduced dv/dt across the switches, multi level inverters has given more interest in industrial applications. For the realization of multilevel inverters conventionally various topologies have been proposed. In order to minimize switching elements, losses, size and cost, different hybrid structures have been introduced. In this paper the operation performance of traditional capacitor clamped (Flying Capacitor) and hybrid topology of five level multi level inverters are compared. The results reveal that the total harmonic distortion in the stator current, phase voltage and line voltage is less in hybrid topology than capacitor clamped topology. The simulation is done in MATLAB-Simulink.