Novel Switched Configuration-Based Multilevel Inverter Topology for Industrial Applications

Abstract

Multilevel inverters proved its capabilities nowadays operating in the symmetrical and asymmetrical source of voltages to bring output voltage nearly to a sinusoid. Several variations in topological strategies put forth better output quality with lesser harmonic distortion. However, it suffers from several issues predominantly such as more number of devices, higher blocking voltage, and power loss for higher voltage levels. This paper forays a fresh topology on switched configuration multilevel inverters with optimum dc sources, switches, voltage level, and filter requirements. The proposed topology has the flexibility to extend for higher voltage levels with make use of less switches. The proposed structure has been simulated in MATLAB/Simulink and validated the results in a laboratory setup.

An improved nested 3-phase 5-level MLI design with optimized output voltage and total harmonic distortion

“…Multilevel Inverters (MLIs) offer an appealing option for a variety of medium-voltage applications including industrial motors, FACTS, HVDC, renewable power sources, etc [1,2]. Additionally, they are extended for lowenergy utilization because of the advantages of less device pressure, filters' mass, electromagnetic interference (EMI), and the potential to produce sinusoidal voltage outputs with enhanced harmonic components when compared with 2-level MLI.…”