New Asymmetric 25-Level Inverter Topology with Reduced Switch Count

摘要

In this paper, a new 25-level inverter topology with reduced number of dc sources and switches is recommended. The proposed inverter uses three dc sources and 13 switches to generate 25-level voltage at the output. The proposed inverter structure is compared with several other asymmetrical topologies which indicate the reduction of both the number of sources and switches. Additionally, the proposed inverter offers higher efficiency and lower switching losses. Finally, the inverter performance is analyzed by generating 25-level output voltage using Matlab/Simulink. The proposed inverter is suitable for low- and medium-voltage applications including grid connected renewable energy system and hybrid microgrid.