TY - GEN
T1 - A power conversion system for AC furnace with enhanced arc stability
AU - Suh, Yongsug
AU - Park, Hyeoncheol
AU - Lee, Yongjoong
AU - Steimer, Peter
PY - 2009
Y1 - 2009
N2 - This paper proposes a criterion for ac arc stability and an optimal converter topology for a non-ferrous metal ac arc furnace. The ac arc furnace rated for 36kA/224V/21MW has been investigated. The key parameters of modified Cassie-Mayr arc model have been calculated by the electromagnetic and flow simulations for electric arc. The used arc simulation model has been validated by a laboratory free-burning arc setup. It has been shown that the steepness of arc current at zero-crossing determines the arc stability, and the associated peak arc resistance can be used as its quantitative measure. Among the evaluated three power converter systems, the forced commutated inverter topology with a six-step modulation realizes the steepest current at zero-crossing resulting in the best arc stability. The proposed converter topology having a high degree of arc stability is expected to bring about reliable operation of ac arc furnace and enhanced productivity of the total furnace system.
AB - This paper proposes a criterion for ac arc stability and an optimal converter topology for a non-ferrous metal ac arc furnace. The ac arc furnace rated for 36kA/224V/21MW has been investigated. The key parameters of modified Cassie-Mayr arc model have been calculated by the electromagnetic and flow simulations for electric arc. The used arc simulation model has been validated by a laboratory free-burning arc setup. It has been shown that the steepness of arc current at zero-crossing determines the arc stability, and the associated peak arc resistance can be used as its quantitative measure. Among the evaluated three power converter systems, the forced commutated inverter topology with a six-step modulation realizes the steepest current at zero-crossing resulting in the best arc stability. The proposed converter topology having a high degree of arc stability is expected to bring about reliable operation of ac arc furnace and enhanced productivity of the total furnace system.
UR - http://www.scopus.com/inward/record.url?scp=72449187443&partnerID=8YFLogxK
U2 - 10.1109/ECCE.2009.5316181
DO - 10.1109/ECCE.2009.5316181
M3 - Conference contribution
AN - SCOPUS:72449187443
SN - 9781424428939
T3 - 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
SP - 2043
EP - 2050
BT - 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
T2 - 2009 IEEE Energy Conversion Congress and Exposition, ECCE 2009
Y2 - 20 September 2009 through 24 September 2009
ER -