52 Published By: Blue Eyes Intelligence Engineering & Sciences Publication Pvt. Ltd.

Abstract — This paper presents the waveform analysis of new diode clamped and cascade H-bridge multilevel inverters using Pulse width modulation technique. Multilevel voltage source converters are emerging as a new breed of power converter options for high-power applications. The multilevel voltage source converters typically synthesize staircase voltage wave from several levels of dc capacitor voltages. One of the major limitations of the multilevel converters is the voltage unbalance between different levels. The techniques to balance the voltage between different levels normally involve voltage clamping or capacitor charge control. An analysis of how existing multilevel carrier-based PWM affect switch utilization for the different levels of a new diode clamped and H-bridge inverter are conducted and compared. Index Terms – Clamping Diodes, cascaded H-bridge inverter