Abstract

This work focuses on developing a multi-level proposal for a three-phase multi-source inverter, accompanied by the design of a specific modulation technique for this new topology. The traditional multi-source inverter can generate output voltages of different levels, but these levels cannot be generated in the same signal period. This proposal considers the development of a threephase multi-source multilevel inverter, in which its three-phase extension still requires isolated DC sources. From this, a modulation technique is designed to minimize the output voltage's THD by obtaining the DC voltage ratios and firing angles. The results demonstrate that the modulation technique intended for the multi-level multi-source inverter is functional. The inverter output voltage is stepped in 7 levels, resulting in a THD of approximately 10.50% for a modulation index m=1.0. © 2025 IEEE.