Auxiliary Supply Assisted Input Current Harmonic Reduction in 12-Pulse Thyristor Rectifiers

Author

Fukuda, Shoji ; Hiei, Issei

Author_Institution

Grad. Sch. of Inf. Sci. & Technol., Hokkaido Univ.

Volume

2

fYear

0

Firstpage

854

Lastpage

859

Abstract

Three-phase thyristor rectifiers have been used in industries for obtaining a variable DC voltage, but they have a problem that they include large lower-order harmonics in the input currents. For high power applications a 12-pulse configuration is useful for reducing them, but it still includes the (12mplusmn1)^th (m: integer) harmonics. In order to further reduce the harmonics, this paper proposes to insert an auxiliary voltage supply (AVS) to the DC bus of a 12-pulse thyristor rectifier. Theoretical analysis is presented, and a control strategy of AVS voltage is proposed. Reduction in the current harmonics is verified by simulation and experimental results

Keywords

harmonics suppression; rectifying circuits; thyristor convertors; 12-pulse thyristor rectifiers; auxiliary voltage supply; input current harmonic reduction; large lower-order harmonics; variable DC voltage; Analog-digital conversion; Circuit simulation; Current supplies; Harmonic analysis; Information science; Power harmonic filters; Power system harmonics; Rectifiers; Thyristors; Voltage control; 12-pulse rectifier; auxiliary voltage supply; harmonic reduction; phase controlled converter; thyristor;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drives Systems, 2005. PEDS 2005. International Conference on

Conference_Location

Kuala Lumpur

Print_ISBN

0-7803-9296-5

Type

conf

DOI

10.1109/PEDS.2005.1619807

Filename

1619807