A Multicarrier PWM for Parallel Three-Phase Active Front-End Converters

Author

Hou, Chung-Chuan

Author_Institution

Dept. of Electr. Eng., Chung Hua Univ., Hsinchu, Taiwan

Volume

28

Issue

6

fYear

2013

fDate

Jun-13

Firstpage

2753

Lastpage

2759

Abstract

The use of parallel three-phase active front-end (AFE) converters has become more popular due to their simplicity, low cost, and expandability. However, the pulse width modulation (PWM) switching of parallel three-phase AFE converters causes circulating current. The circulating current is mainly affected by the zero vectors of each PWM cycle. This study proposes a multicarrier PWM for parallel three-phase AFE converters. The multicarrier PWM can synthesize the desired output voltage without using zero vectors. Therefore, the circulating current between parallel three-phase AFE converters will be suppressed by the multicarrier PWM scheme. Furthermore, the common mode voltage of a three-phase AFE converter is reduced by the multicarrier PWM scheme. Simulation and test results are presented to validate the performances of the proposed multicarrier PWM for parallel three-phase AFE converters.

Keywords

PWM power convertors; power convertors; switches; circulating current; desired output voltage; multicarrier PWM; parallel three-phase active front-end converters; pulse width modulation switching; zero vectors; Inductors; Regulators; Space vector pulse width modulation; Switches; Vectors; Voltage control; Active front-end (AFE) converters; circulating current; multicarrier pulse width modulation (PWM);

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2012.2220860

Filename

6316181