NDLI: Arc stability control of high power thyristor rectifier system in DC arc furnace

Content Provider	IEEE Xplore Digital Library
Author	Kyungsub Jung Yongsug Suh Taewon Kim Taejun Park Yongjoong Lee
Copyright Year	2013
Description	Author affiliation: RIST, POSCO, Pohang, South Korea (Taewon Kim; Taejun Park) \|\| Chonbuk Nat. Univ., Jeonju, South Korea (Kyungsub Jung; Yongsug Suh) \|\| Paul Scherrer Inst., Villigen, Switzerland (Yongjoong Lee)
Abstract	Fundamental features of the arc stability in DC arc furnace of 720V/100kA/72MW have been investigated. Cassie-Mayr arc model has been employed and applied for the target dc arc furnace. In order to characterize the parameters of Cassie-Mayr arc model and the behavior of unstable arc dynamics, the advanced arc simulations of magneto-hydrodynamics (MHD) has been performed. From the results of MHD simulation, dc arc dynamic resistance is proposed to be an effective arc stability function reflecting the instability of dynamic arc behavior. A control strategy to regulate the arc stability function is also proposed in this paper. The simulation and experimental result confirm the usefulness of proposed dynamic arc resistance as arc stability function along with the active control strategy. The proposed arc stability function can be regarded as an effective criterion for the overall power conversion system to maintain highly stable arcing operation leading to better productivity and reliability in a dc arc furnace.
Sponsorship	IEEE Power Electron. Soc.
Starting Page	3143
Ending Page	3150
File Size	1489283
Page Count	8
File Format	PDF
ISBN	9781467343541
ISSN	10482334
e-ISBN	9781467343558
e-ISBN	9781467343534
DOI	10.1109/APEC.2013.6520750
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-03-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Furnaces Mathematical model Resistance Stability criteria Circuit stability Integrated circuit modeling
Content Type	Text
Resource Type	Article

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