Improved ANPC Three-Level Inverter with Voltage Boosting Ability

To address the high DC-link voltage requirements of conventional neutral point clamped topologies, this article introduces a novel single-stage ANPC-type dynamic boost 3L inverter topology. In addition, the proposed topology has low voltage stress on the components and features simple regulation of output voltage without compromising the benefits of neutral-point-clamped topologies. A comparative study demonstrates the proposed topology's superiority over conventional three-level inverters with integrated DC-DC converters. Furthermore, a 650 W prototype hardware setup is used to verify the proposed topology, and the results are discussed. During the experimental test, the maximum efficiency of ≈97% is recorded.