NDLI: A novel control scheme of 230kA DC power source using thyristor, Phase-shifting rectifier transformer and On-load tap changer

Content Provider	IEEE Xplore Digital Library
Author	Qiao Shutong Jiang Jianguo Zuo Dongsheng Wu Xiaojie
Copyright Year	2006
Description	Author affiliation: Dept. of Electr. Eng., Shanghai Jiao Tong Univ. (Qiao Shutong; Jiang Jianguo; Zuo Dongsheng)
Abstract	This 230 kA DC power source is composed of four set separated DC power in parallel operation. There are +3.75deg, -3.75deg, +11.25deg, -11.25deg phase shifting between each rectifier transformer and original source. Each set device mainly contains on-load tap changer, phase-shifting rectifier transformer and con-phase counter parallel rectifier. In this paper, a current control scheme is realized based on SIEMENS corp. product. According to the required function, the hardware is chose and described, and the software is designed and realized. The design control system is organized by current control level, logic control level and human level. The relation between these levels is determined. The system is validated by electrolytic aluminum plant. From the measured data, the current control precision can reach 0.1% in dynamic process. The rectifier efficiency is more than 97.5%. The whole control device's realized zero current changing on-load tap changer. This developed DC power source can utilize for electrochemical, electro winning, plasma torches etc
Sponsorship	China Electrotechnical Soc. IEEE Power Electron. Soc
Starting Page	1
Ending Page	5
File Size	2217084
Page Count	5
File Format	PDF
ISBN	1424404487
DOI	10.1109/IPEMC.2006.4778028
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-08-14
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Thyristors Rectifiers On load tap changers Current control Control systems Plasma measurements Counting circuits Hardware Software design Logic devices Parallel operation power power power power power source phase-shifting rectifier transformer Control system
Content Type	Text
Resource Type	Article

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