A simple space vector PWM scheme to operate a three-level NPC inverter at high modulation index including overmodulation region, with neutral point balancing

被引：124

作者：

Gupta, Amit Kumar ^{[1
]}

Khambadkone, Ashwin M. ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2007年 / 43卷 / 03期

关键词：

modulation index; neutral point balancing; over-modulation; space vector pulsewidth modulation (SVPWM); three-level neutral point clamped (NPC) inverter;

D O I：

10.1109/TIA.2007.895766

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Three-level neutral point clamped (NPC) inverter is a widely used topology of multilevel inverters. However, the neutral point fluctuates for certain switching states. At low modulation index, the fluctuations can be compensated using redundant switching states. But, at higher modulation index and in over-modulation region, the neutral point fluctuation deteriorates the performance of the inverter. This paper proposes a simple space vector pulsewidth modulation scheme for operating a three-level NPC inverter at higher modulation indexes, including overmodulation region, with neutral point balancing. Experimental results are provided.

引用

页码：751 / 760

页数：10

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