Optimal Design of a New Cascaded Multilevel Inverter Topology With Reduced Switch Count

Siddique, Marif Daula and Mekhilef, Saad and Shah, Noraisyah Mohamed and Memon, Mudasir Ahmed (2019) Optimal Design of a New Cascaded Multilevel Inverter Topology With Reduced Switch Count. IEEE Access, 7. pp. 24498-24510. ISSN 2169-3536, DOI https://doi.org/10.1109/ACCESS.2019.2890872.

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Official URL: https://doi.org/10.1109/ACCESS.2019.2890872


Multilevel inverters (MLIs) are a great development for industrial and renewable energy applications due to their dominance over conventional two-level inverter with respect to size, rating of switches, filter requirement, and efficiency. A new single-phase cascaded MLI topology is suggested in this paper. The proposed MLI topology is designed with the aim of reducing the number of switches and the number of dc voltage sources with modularity while having a higher number of levels at the output. For the determination of the magnitude of dc voltage sources and a number of levels in the cascade connection, three different algorithms are proposed. The optimization of the proposed topology is aimed at achieving a higher number of levels while minimizing other parameters. A detailed comparison is made with other comparable MLI topologies to prove the superiority of the proposed structure. A selective harmonic elimination pulse width modulation technique is used to produce the pulses for the switches to achieve high-quality voltage at the output. Finally, the experimental results are provided for the basic unit with 11 levels and for cascading of two such units to achieve 71 levels at the output. © 2013 IEEE.

Item Type: Article
Funders: University of Malaya, Malaysia, through FRGS under Grant FRGS/1/2018/TK07/UM/01/3, Frontier Research under Grant FG007-17AFR
Uncontrolled Keywords: Basic unit; cascaded inverter; multilevel inverter (MLI); optimization; reduce switch count; selective harmonic elimination; SHEPWM
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 16 Jan 2020 01:21
Last Modified: 16 Jan 2020 01:21
URI: http://eprints.um.edu.my/id/eprint/23444

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