A novel synchronous PWM method for three-phase AC/DC/AC converter without DC-link capacitor

Author

Liu, Congwei ; Sun, Zhandong ; Cheng, Ningzi ; Li, Yaohua

Author_Institution

Key Lab. of Power Electron. & Electr. Drive, Inst. of Electr. Eng., Beijing, China

fYear

2012

fDate

25-28 Oct. 2012

Firstpage

134

Lastpage

138

Abstract

Three-phase AC/DC/AC converter without DC-link capacitor provides decreased switching loss on inverter side of the converter, in the price of slightly increased conduction loss on additional four diodes. Comparing with conventional back-toback PWM converter, the total efficiency of the AC/DC/AC converter can be con or pro, depending on the operation conditions of the both converters. This paper proposed a novel synchronous PWM algorithm for rectifier and inverter side of the AC/DC/AC converter, by which the high efficiency operation of the converter is extended from high power factor load to any power factor load in inverter side.

Keywords

AC-DC power convertors; DC-AC power convertors; PWM invertors; PWM power convertors; diodes; rectifiers; switching convertors; DC-link capacitor; back-to-back PWM converter; conduction loss; diodes; high efficiency operation; high power factor load; inverter side; switching loss; synchronous PWM method; three-phase AC-DC-AC converter; Lead; Pulse width modulation; Rectifiers; AC/DC/AC converter; DC-link capacitor; Pulse width modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

IECON 2012 - 38th Annual Conference on IEEE Industrial Electronics Society

Conference_Location

Montreal, QC

ISSN

1553-572X

Print_ISBN

978-1-4673-2419-9

Electronic_ISBN

1553-572X

Type

conf

DOI

10.1109/IECON.2012.6388819

Filename

6388819