Performing pulse-width modulation using two different methods in a modular topology

Current and voltage ripple play a role in converters' design. Implementation of pulse width modulation for the converter can affect these ripples. In this article, a two-module converter is studied. This topology based on a dc-dc three-level boost converter is already investigated in order to balance output voltage. Two methods are presented to implement the pulse width modulation. For both methods, simulation is performed using MATLAB/Simulink. The system waveforms, including inductor current, load current, load voltage, capacitor voltage, command signals, and duty cycles, will be compared for two proposed methods.