Design Analysis of a Seven‐Level Active Neutral Point Clamped (ANPC) Inverter Based on Switched Technique

Abstract A novel switch‐based Active‐Neutral‐Clamped (ANPC) inverter for low DC‐link voltage is presented in this paper. The proposed ANPC topology minimizes switches and achieves 1.5 times better voltage gain than standard inverters. The main objective of this design is to reduce active switches in the inverter to increase system efficiency. A Flying Capacitor (FC) with self‐voltage balancing makes this inverter unique. This flying capacitor enables the inverter to produce a 7‐L output voltage. This study comprehensively analyses how it performs compared to existing technologies. The theoretical aspects of this proposed design have experienced thorough validation through a combination of experimental and simulation results, ensuring its efficacy and practical feasibility. The benchmark comparison further indicates reduced standing voltage requirement (TSV × Vin = 6.5) and a rated efficiency of 97.5%, supporting improved cost, control simplicity, and loss performance. Simulation and experimental results demonstrate the feasibility and effectiveness of the topology in terms of voltage balance, load adaptability, and modulation index adjustment. Simulation tests reveal stable voltage levels and current waveforms under different load conditions, with the peak output voltage reaching 1.5 times the initial input voltage. Experiments on a laboratory prototype validate the topology's dynamic response and self‐balancing capability, showcasing its practical viability. The proposed 7L‐ANPC topology offers a promising solution for enhancing power conversion efficiency and reliability in diverse applications.