适用于中压领域的V形钳位多电平变换器

doi:10.19595/j.cnki.1000-6753.tces.L90365

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Abstract Multilevel converter has been widely used in the medium/high-voltage high-power conversion fields. This paper proposes a new family of topologies named V-clamp multilevel converters (VMCs), which can achieve medium-voltage high-power conversion by a small number of devices. Besides, without flying capacitors employed in the phase legs, the control of the VMC is much easier and simpler. This paper reveals the composition of the VMC topology family, including the expansion method, general form, and evolution type. On this basis, this paper investigates the working principle and control method of VMCs, and analyzes the direct clamping mechanism and blocking voltage distribution. Compared with the existing multilevel converters, the VMC is more suitable for medium-voltage applications. The simulation and experimental results verify the feasibility of the VMC topology family and control method, and further prove the correctness of the theoretical analysis in this paper.

Key words： V-clamp Multilevel converters power conversion DC-link capacitors direct clamping V-clamp Multilevel converters power conversion DC-link capacitors direct clamping V-clamp

Received: 10 July 2020

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TM46

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	Yuan Lutian
	Wang Chenchen
	Xue Yao
	Yang Xiaofeng
	Zheng Trillion Q

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Yuan Lutian,Wang Chenchen,Xue Yao等. V-Clamp Multilevel Converters Suitable for Medium-Voltage Fields[J]. Transactions of China Electrotechnical Society, 2021, 36(20): 4318-4328.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.L90365 OR https://dgjsxb.ces-transaction.com/EN/Y2021/V36/I20/4318

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