TY - GEN
T1 - Stress multipliers for the NSTX upgrade digital coil protection system
AU - Titus, Peter H.
AU - Woolley, R.
AU - Hatcher, R.
PY - 2011
Y1 - 2011
N2 - Conceptual design of the upgrade to NSTX, explored designs sized to accept the worst loads that power supplies could produce. This produced excessive structures that would have been difficult to install and were much more costly than needed to meet the scenarios required for the upgrade mission. Instead, the project decided to rely on a digital coil protection system (DCPS). Initial sizing was then based on the 96 scenarios in the project design point with some headroom to accommodate operational flexibility and uncertainty. This has allowed coil support concepts that minimize alterations to the existing hardware. The digital coil protection system theory, hardware and software are described in another paper at this conference. The intention of this paper is to describe the generation of stress multipliers, and algorithms that are used to characterize the stresses at key areas in the tokamak, as a function of either loads calculated by the influence coefficients computed in the DCPS software, or directly from the coil currents.
AB - Conceptual design of the upgrade to NSTX, explored designs sized to accept the worst loads that power supplies could produce. This produced excessive structures that would have been difficult to install and were much more costly than needed to meet the scenarios required for the upgrade mission. Instead, the project decided to rely on a digital coil protection system (DCPS). Initial sizing was then based on the 96 scenarios in the project design point with some headroom to accommodate operational flexibility and uncertainty. This has allowed coil support concepts that minimize alterations to the existing hardware. The digital coil protection system theory, hardware and software are described in another paper at this conference. The intention of this paper is to describe the generation of stress multipliers, and algorithms that are used to characterize the stresses at key areas in the tokamak, as a function of either loads calculated by the influence coefficients computed in the DCPS software, or directly from the coil currents.
KW - Influence Coefficients
KW - NSTX
KW - Polidal Field Coils
UR - https://www.scopus.com/pages/publications/80955167000
UR - https://www.scopus.com/pages/publications/80955167000#tab=citedBy
U2 - 10.1109/SOFE.2011.6052287
DO - 10.1109/SOFE.2011.6052287
M3 - Conference contribution
AN - SCOPUS:80955167000
SN - 9781457706691
T3 - Proceedings - Symposium on Fusion Engineering
BT - 2011 IEEE/NPSS 24th Symposium on Fusion Engineering, SOFE 2011
T2 - 2011 IEEE/NPSS 24th Symposium on Fusion Engineering, SOFE 2011
Y2 - 26 June 2011 through 30 June 2011
ER -