TY - GEN
T1 - Control algorithm of high power rectifier system in DC arc furnace for improved arc stability
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 of high power rectifier system 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 of high power rectifier system 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/84891043873
U2 - 10.1109/ECCE.2013.6647138
DO - 10.1109/ECCE.2013.6647138
M3 - Conference paper
AN - SCOPUS:84891043873
SN - 9781479903351
T3 - 2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013
SP - 3333
EP - 3339
BT - 2013 IEEE Energy Conversion Congress and Exposition, ECCE 2013
T2 - 5th Annual IEEE Energy Conversion Congress and Exhibition, ECCE 2013
Y2 - 15 September 2013 through 19 September 2013
ER -