Design Analysis of Seven-Level Active Neutral Point Clamped Inverter Based on Diode and Switched Technique

Abstract

This paper presents a comprehensive study on developing and applying a novel seven-level active neutral point clamped (ANPC) inverter topology, distinguished by its simplicity, high efficiency, and effective voltage control capabilities. The given inverter topology uses eight switches, two switched capacitors, and two diodes. This reduces circuit complexity. These components are strategically placed to give the inverter a 1.5 voltage gain. This ensures that the capacitors maintain a self-balancing voltage throughout the board regardless of operation. This study analyzes the topology’s theoretical basis, switching states, and modulation techniques to manage output voltage levels efficiently. Power loss and efficiency gains over typical topologies are also examined in the article. Experimental and simulation results support the inverter’s performance and durability. These findings show the inverter’s potential for motor drives and renewable energy systems that require high-quality power output with low harmonic distortion. The findings improve multilayer inverter efficiency and operational stability, significantly contributing to power electronics.