Improved three-phase high-quality rectifier with line-commutated switches

Author

Marafao, J.A.G. ; Pomilio, José Antenor ; Spiazzi, Giorgio

Author_Institution

Sch. of Electr. & Comput. Eng., Univ. of Campinas, Brazil

Volume

2

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

695

Abstract

The paper presents a three-phase diode rectifier with an add-on simple cell with line-frequency commutated AC switches that is able to greatly improve both power factor and output voltage regulation of rectifiers with passive L-C filters. The boost action introduced by the commutation cell allows for a complete compensation of the voltage drop across the input inductors, so that output voltage regulation can be maintained from no-load to full-load. Moreover, as compared to other line-frequency commutated rectifiers, the proposed circuit allows compliance with the low-frequency harmonic limits defined in the technical report IEC 1000-3-4 for any power range. High-efficiency and minimum EMI are obtained due to the low-frequency commutations. A converter prototype was built and tested. The results confirm the theoretical analysis

Keywords

commutation; rectifying circuits; switches; switching circuits; IEC 1000-3-4; boost action; commutation cell; full-load; high efficiency; input current analysis; line-commutated switches; line-frequency commutated AC switches; low-frequency harmonic limits compliance; minimum EMI; no-load; output voltage regulation; passive L-C filters; power factor; three-phase diode rectifier; three-phase high-quality rectifier; voltage drop compensation; Circuits; Diodes; Inductors; Passive filters; Power harmonic filters; Power system harmonics; Reactive power; Rectifiers; Switches; Voltage control;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2001. PESC. 2001 IEEE 32nd Annual

Conference_Location

Vancouver, BC

ISSN

0275-9306

Print_ISBN

0-7803-7067-8

Type

conf

DOI

10.1109/PESC.2001.954199

Filename

954199