A multi-carrier PWM for parallel three-phase active front-end converters

Author

Hou, Chung-Chuan

Author_Institution

Chung Hua Univ., Hsinchu, Taiwan

fYear

2011

fDate

17-22 Sept. 2011

Firstpage

4081

Lastpage

4086

Abstract

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

Keywords

PWM power convertors; switching convertors; zero current switching; circulating current; common mode voltage; multicarrier PWM; parallel three-phase active front-end converters; parallel three-phase converters; pulse width modulation switching; zero vectors; Regulators; Space vector pulse width modulation; Switches; Vectors; Voltage control; Voltage measurement; active front-end converters; circulating current; multi-carrier PWM;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Conversion Congress and Exposition (ECCE), 2011 IEEE

Conference_Location

Phoenix, AZ

Print_ISBN

978-1-4577-0542-7

Type

conf

DOI

10.1109/ECCE.2011.6064324

Filename

6064324