基于简化SVPWM的Z源三电平逆变器中点电位控制方法

doi:10.19595/j.cnki.1000-6753.tces.161917

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Abstract A neutral-point balancing method for Z source neutral point clamped (NPC) three-level inverter, based on simplified three-level space vector pulse width modulation (SVPWM), is proposed in this paper by analyzing the neutral-point balancing principle, which facilitates the injection of shoot through signals. The proposed method figures out the optimal solution of the balancing index, and realizes the constant voltage control of Z source output by deriving the relationship of the shoot-through ratio, modulation index and balancing index. It suppresses the fluctuation of neutral point efficiently, realizes the control of Boost voltage of Z source network conveniently, and simplifies the control algorithm. Simulation and experimental results verify the proposed neutral point control algorithm.

Key words： Z source three level inverter space vector pulse width modulation neutral point balance

Received: 09 December 2016 Published: 24 April 2018

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TM464

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	Wang Weisheng
	Chen Alian
	Chai Jin
	Xing Xiangyang
	Zhang Chenghui

Cite this article:

Wang Weisheng,Chen Alian,Chai Jin等. The Neutral-Point Balancing Method for Z Source Neutral Point Clamped Inverter Based on Simplified SVPWM[J]. Transactions of China Electrotechnical Society, 2018, 33(8): 1835-1843.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.161917 OR https://dgjsxb.ces-transaction.com/EN/Y2018/V33/I8/1835

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