An X-type boost multilevel inverter based on switched capacitor cells with low-voltage stress and high-frequency applications

Wang, Yaoqiang, Wang, Changlong, Guo, Yanxun, Wang, Kewen and Liang, Jun ORCID: https://orcid.org/0000-0001-7511-449X 2023. An X-type boost multilevel inverter based on switched capacitor cells with low-voltage stress and high-frequency applications. IEEE Journal of Emerging and Selected Topics in Power Electronics 11 (4) , pp. 3623-3632. 10.1109/JESTPE.2021.3124367

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Abstract

A novel X-type boost switched capacitor (SC) multilevel inverter (SCMLI) utilizing a single power supply is proposed. It has a great application potential in the field of new energy power generation and high-frequency scenarios. The proposed topology mainly has the following advantages. Firstly, the proposed topology avoids the use of H-bridge to output bipolar level, so that the maximum inverse voltage stress of the switch does not exceed 4Vdc . Secondly, the maximum switching frequency of the proposed topology is three times the fundamental frequency, which provides an opportunity for the application of the inverter in high-frequency engineering. Thirdly, the charging of the bridge arm capacitors is synchronous, which simplifies the modulation strategy of the extended topology. Moreover, the operating principle of the topology was analyzed in detail, and the feasibility of the inverter and the correctness of the modulation strategy were verified.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Institute of Electrical and Electronics Engineers
ISSN:	2168-6777
Date of First Compliant Deposit:	9 November 2023
Date of Acceptance:	12 October 2021
Last Modified:	15 Nov 2023 21:20
URI:	https://orca.cardiff.ac.uk/id/eprint/163371

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