Design of 63 Level Optimal Novel Cascaded Multilevel Inverter With Reduced Number of Switches and THD

Volume 5 Issue 4 September - November 2017

Research Paper

Design of 63 Level Optimal Novel Cascaded Multilevel Inverter With Reduced Number of Switches and THD

Bolla Madhusudan Reddy* , Y. V. Siva Reddy**, M. Vijaya Kumar***

* Research Scholar, Jawaharlal Nehru Technological University, Anantapur, Andhra Pradesh, India.

** Professor, Board of Studies Member, and Director of Research and Development, G. Pulla Reddy Engineering College, Kurnool, Andhra Pradesh, India.

*** Professor and Director of Admissions, Department of Electrical and Electronics Engineering, Jawaharlal Nehru Technological University, Anantapur, Andhra Pradesh, India.

Reddy, B. M., Reddy, Y. V. S., Kumar, M. V. (2017). Design of 63 Level Optimal Novel Cascaded Multilevel Inverter With Reduced Number of Switches and THD. i-manager’s Journal on Circuits and Systems, 5(4), 20-26. https://doi.org/10.26634/jcir.5.4.13941

Abstract

This paper proposed a high level novel cascaded multilevel inverter which has less number of switches and less number of sources. Generally, industries are used high level multilevel inverters for meeting large power demand. In order to get quality output voltage, authors required multilevel inverters than conventional inverters. In this paper, an authors proposed new structure of sub multilevel inverter with less number of switches and less number of DC sources. A high level novel cascaded multilevel inverter is proposed, which is cascaded combination of newly proposed sub multilevel inverters. Over all number of switches is less in proposed high level novel multilevel inverter. This novel high level cascaded multilevel inverter is implemented in symmetrical as well as asymmetrical forms. The optimal structure is possible with asymmetrical form which has fewer switches, less sources and less standing voltages than symmetrical form. The proposed topology is compared with respect to existing topology such as cascaded H bridge by considering number of components such as number of switches and IGBTs, etc. This proposed high level novel multilevel inverter is verified with computer simulation.