模块组合多电平变换器的载波循环正弦脉宽调制策略

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Abstract The floating capacitor voltage balancing control is one of the key issues in modular multilevel converter (MMC). Based on analysis of the redundant switching states of carrier disposition SPWM, the paper proposes a carrier-rotation strategy which reconstructs the corresponding relation between carriers and power modules by rotating carriers. The proposed strategy makes good use of redundant switch states to reduce charging and discharging time difference among floating capacitors, so as to realize the floating capacitor voltage balancing control. The simulation and experimental results show that the strategy is effective in eliminating voltage fluctuation of each floating capacitor and voltage difference among them.

Key words： keywords：Modular multilevel converter carrier disposition SPWM carrier rotation voltage balancing control

Received: 20 September 2012 Published: 12 December 2013

PACS:	TM46
	TM761

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	Articles by authors
	Lin Zhiqin
	Yang Xiaofeng
	Trillion Q Zheng

Cite this article:

Lin Zhiqin,Yang Xiaofeng,Trillion Q Zheng. Carrier Rotation SPWM Strategy for Modular Multilevel Converter[J]. Transactions of China Electrotechnical Society, 2013, 28(1增): 430-435.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I1增/430

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