TY - GEN
T1 - NSTX toroidal field coil turn to turn short detection
AU - Ramakrishnan, S.
AU - Que, W.
AU - Zhao, Xin
AU - Neumeyer, C.
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2016/5/31
Y1 - 2016/5/31
N2 - The National Spherical Torus Experiment (NSTX) was designed, installed, and commissioned in the existing facilities at Princeton Plasma Physics Laboratory (PPPL) in 1999. Most of the hardware, plant facilities, auxiliary subsystems, and power systems originally used for the Tokamak Fusion Test Reactor (TFTR) were used with suitable modifications to reflect NSTX needs. A major upgrade was undertaken on NSTX. The TF has been upgraded to provide one tesla field from the present 0.5 tesla field. This entailed a much higher Toroidal Field Current from 71.2kA to 129.8kA, and required major configuration changes including doubling the number of parallel strings of rectifiers along with associated power loop changes. Before the planned upgrade the machine developed turn to turn fault of the Toroidal Field Coil bundle. The machine was shut down and the Upgrade work started earlier than planned. It was decided to provide a turn to turn fault detection and trip for the upgraded toroidal field coil. A unique scheme was developed to detect a turn to turn fault in TF. This paper gives a description of the turn to turn short detection scheme that has been implemented.
AB - The National Spherical Torus Experiment (NSTX) was designed, installed, and commissioned in the existing facilities at Princeton Plasma Physics Laboratory (PPPL) in 1999. Most of the hardware, plant facilities, auxiliary subsystems, and power systems originally used for the Tokamak Fusion Test Reactor (TFTR) were used with suitable modifications to reflect NSTX needs. A major upgrade was undertaken on NSTX. The TF has been upgraded to provide one tesla field from the present 0.5 tesla field. This entailed a much higher Toroidal Field Current from 71.2kA to 129.8kA, and required major configuration changes including doubling the number of parallel strings of rectifiers along with associated power loop changes. Before the planned upgrade the machine developed turn to turn fault of the Toroidal Field Coil bundle. The machine was shut down and the Upgrade work started earlier than planned. It was decided to provide a turn to turn fault detection and trip for the upgraded toroidal field coil. A unique scheme was developed to detect a turn to turn fault in TF. This paper gives a description of the turn to turn short detection scheme that has been implemented.
UR - https://www.scopus.com/pages/publications/84978919844
UR - https://www.scopus.com/inward/citedby.url?scp=84978919844&partnerID=8YFLogxK
U2 - 10.1109/SOFE.2015.7482389
DO - 10.1109/SOFE.2015.7482389
M3 - Conference contribution
AN - SCOPUS:84978919844
T3 - Proceedings - Symposium on Fusion Engineering
BT - 2015 IEEE 26th Symposium on Fusion Engineering, SOFE 2015
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 26th IEEE Symposium on Fusion Engineering, SOFE 2015
Y2 - 31 May 2015 through 4 June 2015
ER -