Hybrid Modulation Strategies for Eliminating Low-Frequency Neutral-Point Voltage Oscillations in the Neutral-Point-Clamped Converter

被引：41

作者：

Orfanoudakis, Georgios I. ^{[1
]}

Yuratich, Michael A.

Sharkh, Suleiman M. ^{[1
]}

机构：

[1] Univ Southampton, Fac Engn & Environm, Electromech Res Grp, Southampton SO17 1BJ, Hants, England

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 2013年 / 28卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

Capacitor balancing; hybrid modulation strategies; neutral-point-clamped (NPC) converter; neutral point (NP) voltage ripple;

D O I：

10.1109/TPEL.2012.2231883

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Nearest vector (NV) modulation strategies for the neutral-point-clamped converter are known to generate low-frequency neutral point (NP) voltage oscillations. Non-NV strategies can eliminate these oscillations, but at the expense of higher switching losses and output voltage harmonic distortion. This letter proposes a simple way of creating hybrid strategies, as combinations of NV and non-NV strategies, which are also able to eliminate NP voltage oscillations. The approach minimizes the participation of non-NV strategies and hence their drawbacks, while it can be applied to any type of load (nonlinear and/or unbalanced). Simulations in MATLAB-Simulink are used to illustrate its operation.

引用

页码：3653 / 3658

页数：6

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