TY - GEN
T1 - Arc stability control of high power thyristor rectifier system in DC arc furnace
AU - Jung, Kyungsub
AU - Suh, Yongsug
AU - Kim, Taewon
AU - Park, Taejun
AU - Lee, Yongjoong
PY - 2013
Y1 - 2013
N2 - 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.
AB - 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.
UR - https://www.scopus.com/pages/publications/84879328632
U2 - 10.1109/APEC.2013.6520750
DO - 10.1109/APEC.2013.6520750
M3 - Conference paper
AN - SCOPUS:84879328632
SN - 9781467343541
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 3143
EP - 3150
BT - 2013 28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
T2 - 28th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2013
Y2 - 17 March 2013 through 21 March 2013
ER -