A novel 7-Level symmetric inverter module with less circuit components

Multilevel Power Converters (MPCs) have vast potential in power electronics research and development of DC-AC electrical energy conversion system. MLIs have become an inescapable power electronics device in various power conversion applications due to the incompatibility of traditional two-level inverters. MLIs are extremely popular for medium power and high AC voltage applications, and thus predicted to gather incessant attention in future. This article suggests a novel single-phase symmetric 7-level inverter suitable for a renewable energy application with an effort to lower the count of switching components and conducting devices in the path for the flow of current. The proposed symmetric type inverter circuit could produce 7-level output voltage by using three DC sources and seven power electronic switches. The suggested inverter structure can be used to generate any number of voltage levels, and it can produce all output voltage levels (i.e.,+ve,-ve and zero), which significantly reduces the inverter's total standing voltage. The performance of the suggested 7-level inverter topology was confirmed by simulation results obtained in MATLAB/Simulink. Copyright (c) 2022 Elsevier Ltd. All rights reserved. Selection and peer-review under responsibility of the scientific committee of the Second International Conference on Engineering Materials, Metallurgy and Manufacturing.