Parametric Design of Five-Level Active NPC Inverter

Abstract

This paper describes the loss analysis and capacitor designing method for an active neutral-point-clamped (ANPC) multilevel inverter. The ANPC circuit topology is a combination of a neutral-point-clamp circuit and flying capacitor circuit topologies. This circuit requires lesser number of components than conventional multilevel converters. Loss analysis is performed using mathematical expressions. The analysis results of the losses agreed with the experimental results.