COMPARATIVE STUDY OF HYBRID AND CASCADED H-BRIDGE MULTILEVEL INVERTERS

M.Dileep Krishna, Shelly Vadhera

Abstract: In this paper comparative study of proposed hybrid multilevel inverter (HMI) operating in modified pulse width modulation (PWM) mode with cascaded H-bridge multilevel inverter (CHMI) is done. Two types of HMIs are proposed with same configuration. To control the two HMIs, modified PWM techniques are derived from sinusoidal pulse width modulation (SPWM) to reduce the switching losses in the inverter. Matlab/Simulink models are used to study the output of HMI and CHMI

Keywords: Cascaded H-bridge multilevel inverter, Hybrid multilevel inverter, Pulse width modulation, Total harmonic distortion (THD)

DOI: https://doi.org/10.15623/ijret.2013.0208063