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Arc Stability Control of a High-Power Thyristor Rectifier System in a DC Arc Furnace

Jung, Kyungsub; Suh, Yongsug; Kim, Taewon; Park, Taejoon and Lee, Yong Joong LU (2014) In IEEE Transactions on Power Electronics 29(12). p.6342-6351
Abstract
Fundamental features of the arc stability in a dc arc furnace of 720 V/100 kA/72 MW have been investigated. The Cassie-Mayr arc model has been employed and applied for the target dc arc furnace. In order to characterize the parameters of the Cassie-Mayr arc model and the behavior of unstable arc dynamics, the advanced arc simulations of magneto-hydrodynamics (MHD) have been performed. From the results of MHD simulation, the dc arc dynamic resistance is proposed to be an effective arc stability function reflecting the instability of dynamic arc behavior. A control strategy of the 12-pulse thyristor rectifier system to regulate the arc stability function is also proposed in this paper. The simulation and experimental results confirm the... (More)
Fundamental features of the arc stability in a dc arc furnace of 720 V/100 kA/72 MW have been investigated. The Cassie-Mayr arc model has been employed and applied for the target dc arc furnace. In order to characterize the parameters of the Cassie-Mayr arc model and the behavior of unstable arc dynamics, the advanced arc simulations of magneto-hydrodynamics (MHD) have been performed. From the results of MHD simulation, the dc arc dynamic resistance is proposed to be an effective arc stability function reflecting the instability of dynamic arc behavior. A control strategy of the 12-pulse thyristor rectifier system to regulate the arc stability function is also proposed in this paper. The simulation and experimental results confirm the usefulness of the proposed dynamic arc resistance as the 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. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Arc stability, dc arc furnace, rectifier, thyristor control
in
IEEE Transactions on Power Electronics
volume
29
issue
12
pages
6342 - 6351
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000341623800013
  • scopus:84906265147
ISSN
0885-8993
DOI
10.1109/TPEL.2014.2304721
language
English
LU publication?
yes
id
bbd6a2ea-7768-4c83-a83b-7610ebc886c4 (old id 4709932)
date added to LUP
2014-10-24 07:46:00
date last changed
2017-10-01 03:59:42
@article{bbd6a2ea-7768-4c83-a83b-7610ebc886c4,
  abstract     = {Fundamental features of the arc stability in a dc arc furnace of 720 V/100 kA/72 MW have been investigated. The Cassie-Mayr arc model has been employed and applied for the target dc arc furnace. In order to characterize the parameters of the Cassie-Mayr arc model and the behavior of unstable arc dynamics, the advanced arc simulations of magneto-hydrodynamics (MHD) have been performed. From the results of MHD simulation, the dc arc dynamic resistance is proposed to be an effective arc stability function reflecting the instability of dynamic arc behavior. A control strategy of the 12-pulse thyristor rectifier system to regulate the arc stability function is also proposed in this paper. The simulation and experimental results confirm the usefulness of the proposed dynamic arc resistance as the 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.},
  author       = {Jung, Kyungsub and Suh, Yongsug and Kim, Taewon and Park, Taejoon and Lee, Yong Joong},
  issn         = {0885-8993},
  keyword      = {Arc stability,dc arc furnace,rectifier,thyristor control},
  language     = {eng},
  number       = {12},
  pages        = {6342--6351},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Power Electronics},
  title        = {Arc Stability Control of a High-Power Thyristor Rectifier System in a DC Arc Furnace},
  url          = {http://dx.doi.org/10.1109/TPEL.2014.2304721},
  volume       = {29},
  year         = {2014},
}