A Multilevel Inverter with Symmetrical and Asymmetrical Sources

• Published in: 2024 International Conference on Computational Intelligence for Green and Sustainable Technologies (ICCIGST) pp. 1 - 5
• Main Authors: Chappa, Anilkumar, Donepudi, Sudha Rani, Rambabu, Ch
• Format: Conference Proceeding
• Language: English
• Published: IEEE 18.07.2024
• Subjects: Asymmetrical Source; Capacitors; Costs; Loading; Multi Carrier SPWM; Multilevel Inverter; Multilevel inverters; Protection; Prototypes; Stress; Switching frequency; Topology; Total Standing Voltage; Voltage
• DOI: 10.1109/ICCIGST60741.2024.10717565

Multilevel inverter (MLI) is remarkably employed in various industrial applications in comparison with the conventional two-level inverters due to their key benefits such as low voltage stress and lesser harmonic distortion. However, requiring higher number of device count to produce higher number of voltage levels is the major drawback. In this regard, a MLI topology is proposed to produce symmetrical and asymmetrical voltage with less number of device count in this thesis. The proposed topology requires only two dc sources, one capacitor and ten switches to produce 9-level and 11-level voltage waveform. Further, the utilized capacitor is self-balanced during different loading conditions without use of any external circuitry. The superior characteristics of the proposed topology have been verified by comparing with the recent literature. The proposed topology is validated through experimental analysis to enhance the stable operation for different loading conditions, switching frequencies and modulation indexes."