24-pulse rectifier topology with 3-phase to four 3-phase transformation by novel interconnection of conventional 3-phase and 1-phase transformers

Author

Arvindan, A.N.

Author_Institution

Dept. of Electr. & Electron. Eng., Anna Univ. (Chennai), Chennai, India

fYear

2010

fDate

27-29 Oct. 2010

Firstpage

973

Lastpage

979

Abstract

A 24-pulse rectifier topology based on phase shifting by conventional magnetics is proposed. Four 3-phase systems are obtained from a single 3-phase source using novel interconnection of conventional single- and 3-phase transformers. From two 30° displaced 3-phase systems feeding two 6-pulse rectifiers that are series connected, a 12-pulse rectifier topology is obtained. Thus, from the four 3-phase systems that are displaced by 15° two 12-pulse rectifiers are obtained that are cascaded to realize a 24-pulse rectifier. Phase shifts of 15° and 30° are made using phasor addition of relevant line voltages with a combination of single-phase and three-phase transformers respectively. PSCAD based simulation and experimental results that confirm the design efficacy are presented.

Keywords

power transformers; rectifying circuits; PSCAD; line voltage; phase shifting; pulse rectifier topology; single phase transformer; three phase transformer; multipulse converter; multipulse rectifier; power quality; pulse number; total harmonic distortion;

fLanguage

English

Publisher

ieee

Conference_Titel

IPEC, 2010 Conference Proceedings

Conference_Location

Singapore

ISSN

1947-1262

Print_ISBN

978-1-4244-7399-1

Type

conf

DOI

10.1109/IPECON.2010.5696954

Filename

5696954