三电平中性点箝位电压源PWM逆变器中性点电压平衡问题的综合研究

APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285) Pub Date : 1999-03-14 DOI:10.1109/APEC.1999.749733

N. Celanovic, D. Boroyevich

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引用次数: 935

摘要

本文探讨了三电平电压源逆变器不同负载条件下中性点电压平衡问题的基本局限性。提出了一种利用电流切换函数的DQ坐标系下的新模型，作为研究理论局限性和更直观地了解问题的一种手段。对中性点在一定载荷条件下产生的低频纹波进行了观察和量化。

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A comprehensive study of neutral-point voltage balancing problem in three-level neutral-point-clamped voltage source PWM inverters

This paper explores the fundamental limitations of neutral-point voltage balancing problem for different loading conditions of three level voltage source inverters. A new model in DQ coordinate frame utilizing current switching functions is developed, as a means to investigate theoretical limitations and lend more intuitive insight into the problem. The low frequency ripple of the neutral point caused by certain loading conditions is observed and quantified.

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APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285)

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