Title :
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.
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;
Conference_Titel :
Power Electronics and Drives Systems, 2005. PEDS 2005. International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
0-7803-9296-5
DOI :
10.1109/PEDS.2005.1619807
