Component Efficient approach for Multilevel Inverter Topology for Asymmetrical operation


Ati Greeshma, Corresponding Author, Kiran Kumar Danduprolu
Department of Electrical and Electronics Engineering, JNTUH College of Engineering, Hyderabad, T.S, India.


Asymmetrical multi-level inverters are crucial for modern power systems, providing high voltage levels while improving energy efficiency and lowering harmonic distortion. The primary purpose of the research described in this article is to reduce the number of components and THD. In an asymmetrical form, the proposed structure generates the 11 level and extends to the 21 level. The proposed framework has six unidirectional switches and one bidirectional switch. The extended model now features 12 unidirectional and 2 bidirectional switches (Cascaded). The study intends to overcome the shortcomings of standard designs by presenting novel ways to improve the overall performance of the inverter system. In simple terms, a comparison of output voltage, output current, and total harmonic distortion (THD) is made between 11 level and 21 levels using level shifted PWM technique. As a result, the simulation results for the extension of levels using the cascaded structure of a multilevel inverter are developed in MATLAB/Simulink. Keywords- Multilevel inverter, Asymmetrical, Total harmonic distortion, Level shifted PWM technique