Design of 7-level cascade asymmetric multilevel inverter for renewable energy applications using FPGA

Unofficial AI-generated summary based on the public title and abstract. Not an official translation.

🔬研究者:Power electronics researchers can use this topology as a reference for low-THD inverter design.

🏢実務担当者:Inverter manufacturers may consider this design for renewable energy applications to reduce harmonics.

The increasing focus on renewable energy has driven the need for efficient  and reliable power converters. Multilevel inverters offer low harmonic  distortion and high-quality output but often suffer from design complexity  and excessive component count. This study presents the design and  implementation of a 7-level cascaded asymmetric multilevel inverter  optimized for renewable energy applications. The proposed topology utilizes  a cascade structure with asymmetric DC voltage sources to generate seven  voltage levels, providing a practical balance between performance and  simplicity. The design was first validated through MATLAB/Simulink  software to analyze circuit operation and evaluate the total harmonic  distortion (THD) performance. Experimental evaluation was then conducted  using a hardware prototype to verify simulation results. Without a filter, the  THD from the simulation was 21.31%, while the experimental setup  recorded a slightly higher value of 21.61%, indicating a marginal difference  of 0.21%. With a filter, the simulation achieved a THD of 3.81%, whereas  the experimental setup outperformed with a THD of 1.5%, showing a  notable reduction of 2.31%. These findings confirm the proposed inverter’s  capability to deliver superior power quality and operational efficiency.  The combination of simulation and experimental validation demonstrates the  practicality and reliability of the 7-level cascade asymmetric multilevel  inverter for renewable energy applications. 

• Zenodo https://zenodo.org/records/20635339first seen 2026-06-11 04:29:15