Common-Mode Voltage Reduction Method for Three-level NPC Converter

被引：0

作者：

Liu, Jinxin ^{[1
]}

Ge, Qiongxuan ^{[1
]}

Wang, Xiaoxin ^{[1
]}

Tan, Longcheng ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Elect Engn, Key Lab Power Elect & Elect Drive, Beijing 100190, Peoples R China

来源：

2013 INTERNATIONAL CONFERENCE ON ELECTRICAL MACHINES AND SYSTEMS (ICEMS) | 2013年

关键词：

LEAKAGE CURRENTS; DRIVE SYSTEMS; MOTOR; BEARING;

D O I：

暂无

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：

It is well known that commonly used neutral-point clamped (NPC) three-level inverter modulation schemes generate common-mode voltages. Common-mode voltages may cause motor shaft voltages and bearing currents and electromagnetic interference (EMI). Therefore, it is important to reduce the common-mode voltage in power converter, especially at high voltage with large capacity. This paper introduces a new algorithm for approaching the reference vector, which is easy to be realized. Based on the analysis of the characteristic and rule for the Three-level NPC converter, each voltage space vector and redundancy states were discussed in detail, and the relationship between redundancy switching states and common-mode voltage was found. At the same time a common-mode voltage reduction method for Three-level NPC converter was proposed. The simulation results are provided to verify the proposed method.

引用

页码：1826 / 1829

页数：4

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