一种基于开关电容的九电平逆变器

doi:10.19595/j.cnki.1000-6753.tces.201474

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Abstract Multilevel inverters based on switched-capacitor have the advantages of simple circuit topology and self-balancing of capacitor voltages. However, the existing switched-capacitor based multilevel inverter has a large number of components and large voltage stress. For this reason, this paper proposes a nine-level inverter. The circuit achieves quadruple boost nine-level output through a smaller number of components and lower voltage stress, and has a lower cost and volume. Combining the nearest level modulation and the fundamental frequency modulation, the switch control signals are generated. Moreover, the satisfied AC (Alternating Current) output is realized through the orderly on-off of switches. The operation principle, modulation strategy and circuit parameters of proposed inverter are analyzed in detail. Finally, a prototype is built for experiment to prove the effectiveness and feasibility of proposed inverter.

Key words： Multilevel inverter switched-capacitor self-balancing of capacitor voltages boost

Received: 06 November 2020

PACS:

TM464

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	Articles by authors
	Chen Sizhe
	Xu Mengran
	Fan Yuanliang
	Chang Le
	Yang Ling

Cite this article:

Chen Sizhe,Xu Mengran,Fan Yuanliang等. A Nine-Level Inverter Based on Switched-Capacitor[J]. Transactions of China Electrotechnical Society, 2022, 37(4): 931-941.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.201474 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I4/931

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