A 10,000 A 1000 VDC solid state dump switch

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Description

The superconducting magnet test program at Fermilab requires a switch, called a dump switch, rated 10,000 A, 1000 Vdc, which must be able to continuously carry rated current. A dump resistor rated 2 MJoules, is connected in parallel with the switch contacts and dissipates the stored energy from a magnet when the switch opens. The required switch opening time is 250 {mu}sec maximum after detection of a fault or a trip command. A successful switch can be constructed from six parallel inverter type Silicon Controlled Rectifiers (SCR's) which each carry their share of the load current. These run SCR's are … continued below

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7 pages

Creation Information

Visser, A. May 1, 1991.

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Description

The superconducting magnet test program at Fermilab requires a switch, called a dump switch, rated 10,000 A, 1000 Vdc, which must be able to continuously carry rated current. A dump resistor rated 2 MJoules, is connected in parallel with the switch contacts and dissipates the stored energy from a magnet when the switch opens. The required switch opening time is 250 {mu}sec maximum after detection of a fault or a trip command. A successful switch can be constructed from six parallel inverter type Silicon Controlled Rectifiers (SCR's) which each carry their share of the load current. These run SCR's are mounted at watercooled heatsinks and are commutated off from stored energy in capacitors. Each parallel SCR is connected in series with a 1 m{Omega} watercooled resistor to assure dc current sharing and turn on. A description of the control and construction of the switch is presented. 6 figs.

Physical Description

7 pages

Notes

OSTI; NTIS; GPO Dep.

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  • 4. European conference on power electronics and applications, Florence (Italy), 3-6 Sep 1991

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  • Other: DE91014141
  • Report No.: FNAL/C-91/114
  • Report No.: CONF-910936--1
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 5739479
  • Archival Resource Key: ark:/67531/metadc1084774

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • May 1, 1991

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

Description Last Updated

  • May 22, 2019, 12:36 p.m.

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Visser, A. A 10,000 A 1000 VDC solid state dump switch, article, May 1, 1991; Batavia, Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1084774/: accessed July 16, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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