Meticulous Analysis of Three-Phase Active T-Type Neutral Point Clamped (NPC) Inverter

Abstract

The Three-Phase Active T-Type Neutral Point Clamped (NPC) inverter has emerged as a highly efficient topology for medium- and high-power conversion systems. This paper presents a detailed engineering analysis supported by MATLAB/Simulink-based evaluation. Key performance indicators including Total Harmonic Distortion (THD), switching losses, efficiency, and voltage stress are examined. Results demonstrate that the Active T-Type topology significantly improves waveform quality while reducing conduction losses compared to traditional inverter architectures.