TY - GEN
T1 - A study on medium voltage power conversion system for plasma torch
AU - Suh, Yongsug
AU - Lee, Yongjoong
AU - Kheir, Jan
AU - Steimer, Peter
PY - 2008
Y1 - 2008
N2 - This paper investigates the medium voltage power conversion system for plasma torch application. The plasma torch rated for 3MW, 2kA and having the physical size of 1m long is selected. The dynamic characteristics of the DC arc in plasma torch are investigated using advanced 3D magneto-hydrodynamics simulation. The parameters of Cassie-Mayr arc model are calculated based on 3D simulation. Two-phase staggered series connected 3-level dc/dc converters is proposed to be a suitable power converter topology. Simulation shows that the ripple of arc current can be maintained within ±11.5% of its rated value, 460A under the existence of load disturbance of ±10% in arc voltage. This power converter topology provides high ignition voltage around 5kV during ignition phase and high arc stability under the existence of intrinsic arc disturbance noise.
AB - This paper investigates the medium voltage power conversion system for plasma torch application. The plasma torch rated for 3MW, 2kA and having the physical size of 1m long is selected. The dynamic characteristics of the DC arc in plasma torch are investigated using advanced 3D magneto-hydrodynamics simulation. The parameters of Cassie-Mayr arc model are calculated based on 3D simulation. Two-phase staggered series connected 3-level dc/dc converters is proposed to be a suitable power converter topology. Simulation shows that the ripple of arc current can be maintained within ±11.5% of its rated value, 460A under the existence of load disturbance of ±10% in arc voltage. This power converter topology provides high ignition voltage around 5kV during ignition phase and high arc stability under the existence of intrinsic arc disturbance noise.
UR - https://www.scopus.com/pages/publications/52349107240
U2 - 10.1109/PESC.2008.4591968
DO - 10.1109/PESC.2008.4591968
M3 - Conference paper
AN - SCOPUS:52349107240
SN - 9781424416684
T3 - PESC Record - IEEE Annual Power Electronics Specialists Conference
SP - 437
EP - 443
BT - Proceedings - CIS Workshops 2007, 2007 International Conference on Computational Intelligence and Security Workshops, CISW 2007
T2 - PESC '08 - 39th IEEE Annual Power Electronics Specialists Conference
Y2 - 15 June 2008 through 19 June 2008
ER -