A switched-capacitor multilevel inverter topology employing a novel variable structure nearest-level modulation

Sarwer, Zeeshan and Siddique, Marif Daula and Sarwar, Adil and Zaid, Mohammad and Iqbal, Atif and Mekhilef, Saad (2021) A switched-capacitor multilevel inverter topology employing a novel variable structure nearest-level modulation. International Transactions on Electrical Energy Systems, 31 (12). ISSN 2050-7038, DOI https://doi.org/10.1002/2050-7038.13151.

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This article introduces a nine-level switched-capacitor multilevel inverter with twice voltage boosting feature. It also aims at proposing a novel variable structure nearest-level modulation scheme that has been implemented in the proposed topology. The proposed inverter structure possesses a reduced number of switches as compared to some of the recently proposed topologies. Moreover, the proposed arrangement also has an improvement in terms of the reverse blocking voltage (or total standing voltage) of the switch, which determines the rating of the switch requirement. The proposed topology has a voltage boosting feature along with the self-voltage balancing ability of the capacitors. A detailed analysis has been performed in the article, which contains the simulation results for different loading conditions and for varying modulation indexes. Besides, the power loss analysis of the proposed structure is carried out using PLECS software. Losses and efficiency have been explained with the help of graphical analysis. Hardware results, which are obtained using an experimental setup, are also shown and discussed in this article to validate the results obtained by simulation.

Item Type: Article
Funders: Ministry of Education, Malaysia [LRGS/1/2019/UKM-UM/01/6/3]
Uncontrolled Keywords: Multilevel inverter; Total harmonic distortion; Variable structure nearest-level modulation
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering > Department of Electrical Engineering
Depositing User: Ms Zaharah Ramly
Date Deposited: 20 Jul 2022 03:20
Last Modified: 20 Jul 2022 03:20
URI: http://eprints.um.edu.my/id/eprint/28173

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