一种具有中点电位平衡可降低损耗的三电平空间矢量调制方法

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Abstract This paper makes the research to reducing switching losses for the three-level neutral point clamped (NPC) inverter. A novel discontinuous space vector pulse width modulation (SVPWM) strategy is proposed to no switching at position of the maximum current of the unity power factor load. In addition, base on the novel discontinuous SVPWM, a hysteresis controller is applied to balance the neutral point voltage by switching the vector sequence mode. The simulation and experimental results show the feasibility and effectiveness of the novel modulation strategy.

Key words： Mode 0/1 switching losses neutral point potential discontinuous SVPWM three- level NPC inverter

Received: 20 June 2012 Published: 13 April 2015

PACS:

TM464

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	Liu Bin
	Huang Kailun
	Wu Jiaju
	Li Jun

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Liu Bin,Huang Kailun,Wu Jiaju等. A Novel SVPWM Method Considering Neutral-Point Potential Balancing and Reducing Switching Losses for Three-Level Inverter[J]. Transactions of China Electrotechnical Society, 2015, 30(4): 196-202.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I4/196

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