Title :
Zigzag Connected Autotransformer Based Controlled AC-DC Converter for Pulse Multiplication
Author :
Singh, Bhim ; Gairola, Sanjay ; Chandra, Ambrish ; Al-Haddad, Kamal
Author_Institution :
Indian Inst. of Technol., Delhi
Abstract :
This paper deals with the analysis and design of a non-isolated 36-pulse controlled AC-DC converter for medium power rating drives, field winding supply of large alternators, magnet power supplies, etc. It consists of pulse multiplication in non-isolated 12-pulse AC-DC converter to get 36-pulse converter characteristics without employing zero-sequence blocking transformer (ZSBT). The proposed converter employs a zigzag connected autotransformer, which results in near equal leakage reactance in series with each thyristor bridge. The volt-ampere rating of the autotransformer is small and the converter meets IEEE-519 standard power-quality requirements over wide range of firing angle.
Keywords :
AC-DC power convertors; IEEE standards; autotransformers; bridge circuits; power supply quality; windings; AC-DC converter; IEEE-519 standard; field winding supply; leakage reactance; magnet power supplies; power rating drives; power-quality; pulse multiplication; thyristor bridge; zero-sequence blocking transformer; zigzag connected autotransformer; AC-DC power converters; Alternators; Analog-digital conversion; Bridge circuits; Magnetic analysis; Power quality; Power supplies; Pulse transformers; Pulsed power supplies; Thyristors;
Conference_Titel :
Industrial Electronics, 2007. ISIE 2007. IEEE International Symposium on
Conference_Location :
Vigo
Print_ISBN :
978-1-4244-0754-5
Electronic_ISBN :
978-1-4244-0755-2
DOI :
10.1109/ISIE.2007.4374715
