Study of analytical current ripple of three-phase PWM converter

Author

Jiang, Dong ; Wang, Fei

Author_Institution

Min H. Kao Dept. of Electr. Eng. & Comput. Sci., Univ. of Tennessee, Knoxville, TN, USA

fYear

2012

fDate

5-9 Feb. 2012

Firstpage

1568

Lastpage

1575

Abstract

The effects of the current ripple of three-phase PWM converters are very important for the design and control of this kind of converter, which is the most popular topology for the energy conversion system. Based on the previous study of single-phase converter´s current ripple, analytical current ripple of three-phase converter is studied in this paper with the Thevenin equivalent circuit of 8 different voltage vectors. With the analytical expression, current ripple peak value and RMS value could be predicted and fit the simulation results and experimental results well. This analysis provides the basis for variable switching frequency PWM method discussed in the paper of “Variable Switching Frequency PWM for Three-phase Converter for Loss and EMI Improvement” in APEC 2012.

Keywords

PWM power convertors; electromagnetic interference; switching convertors; EMI improvement; RMS value; Thevenin equivalent circuit; analytical current ripple study; current ripple peak value; energy conversion system; loss improvement; single-phase converter current ripple; three-phase PWM converter; three-phase converter current ripple; variable switching frequency PWM method; voltage vector; Equivalent circuits; Simulation; Space vector pulse width modulation; Switches; Switching frequency; Vectors;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2012 Twenty-Seventh Annual IEEE

Conference_Location

Orlando, FL

Print_ISBN

978-1-4577-1215-9

Electronic_ISBN

978-1-4577-1214-2

Type

conf

DOI

10.1109/APEC.2012.6166029

Filename

6166029