Comparison between two-level and T-type inverter

Abstract

Three-level (3L) inverter topologies have gained prominence in DC-AC applications for their advantages over two-level (2L) counterparts, offering lower voltage stress, reduced switching loss, and diminished harmonic distortion. The neutral-point-clamped (NPC) and T-type inverters stand out as the most widely adopted 3L configurations, finding applications in uninterrupted power supplies, motor drives, and photovoltaic inverters. This project delves into the fundamental operations of a 3L inverter, conducting a comparative analysis with its 2L counterpart. The study encompasses modeling and controller design, with a focus on circuit simulation verification. Through this exploration, the project seeks to enhance our understanding of 3L inverter dynamics and contribute valuable insights to the field of power electronics.