Elimination of common-mode voltage in three-phase sinusoidal power converters

被引：237

作者：

Julian, AL ^{[1
]}

Oriti, G

Lipo, TA

机构：

[1] United Technol Res Ctr, E Hartford, CT 06108 USA

[2] Univ Wisconsin, Madison, WI 53706 USA

来源：

IEEE TRANSACTIONS ON POWER ELECTRONICS | 1999年 / 14卷 / 05期

关键词：

common mode voltage; electromagnetic interference; four-phase inverter; modulation; pulsewidth modulation; resonant dc link;

D O I：

10.1109/63.788504

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 an active solution to a common-mode voltage created by typical three-phase inverters. It is shown that the addition of a fourth leg to the bridge of a three-phase inverter eliminates the common-mode voltage to ground created by the modulation of the inverter. An appropriate four-phase LC filter is inserted between the inverter and the load in order to create sinusoidal output line-to-line voltage, A simple modification of the modulation strategy is implemented for the four-phase inverter to achieve a three-phase wye-output neutral-to-ground voltage which is equal to zero at all times for an ideal inverter. The modulation strategy thereby completely eliminates the common-made potential produced by traditional modulation techniques with traditional three-phase inverter topologies.

引用

页码：982 / 989

页数：8