Neutral-Point Voltage Balancing Method for Three-Level Inverter Systems with a Time-Offset Estimation Scheme

被引：30

作者：

Choi, Ui-Min ^{[1
]}

Lee, Kyo-Beum ^{[1
]}

机构：

[1] Ajou Univ, Dept Elect & Comp Eng, Suwon 441749, South Korea

来源：

JOURNAL OF POWER ELECTRONICS | 2013年 / 13卷 / 02期

基金：

新加坡国家研究基金会;

关键词：

Multilevel; Neutral-point voltage balancing; NPC inverter; CLAMPED INVERTERS; INDEX;

D O I：

10.6113/JPE.2013.13.2.243

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：

This paper presents a neutral-point voltage balancing method for three-level inverter systems using a time-offset estimation scheme. The neutral-point voltage is balanced by adding a time-offset to the turn-on time of the switches. If an inaccurate time-offset is added, the neutral-point deviation still remains. An accurate time-offset is obtained through the proposed time-offset estimation scheme. This method is implemented without additional hardware, complex calculations, or analysis. The effectiveness of the proposed method is verified by experiments.

引用

页码：243 / 249

页数：7

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