DefinePK

Abstract

This paper proposes a single-phase seven -level hybrid cascaded multilevel inverter (HCMLI) for fuel cell system, with a novel Pulse Width Modulation (PWM) technique. The proposed modulation technique employs multi carrier waveforms and a single reference sine wave was used to generate the PWM signals. A two phase Interleaved Boost Converter (IBC) between the Proton Exchange Membrane Fuel Cell (PEMFC)and the HCMLI is introduced to reduce the input current ripples and also to convert low voltage high current input into a high voltage low current output. The inverter circuit topology has been described in detail and their performance has been verified based on Total Harmonic Distortion using MATLAB/SIMULINK.