THD Analysis of Modular Multilevel Converters for different voltage Levels

This paper suggests a modular multi-level converter topology for MRI power circuit drive applications. With the aid of cascaded H-bridge sub-modules, simulations for one leg of three-phase, five-level, seven-level, nine-level, and eleven-level modular multi-level inverters were carried out. The THD for various voltage states is compared in this work, and the results were discussed