Superconducting-magnet electrical circuit offering quench protec

Details Superconducting-magnet electrical circuit offering quench protec Superconducting-magnet electrical circuit offering quench protec

1995-11-30

1998-04-14

Leja, Ronald W.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Superconductor protective circuits

335216, H02H 700

Patent

active

057399972

ABSTRACT:
A superconductive-magnet electrical circuit includes a superconductive-coil assemblage having a second coil portion coupled in series with and between first and third coil portions with the third coil portion coupled in series with and between the second and a fourth coil portion. A bipolar current-bypass electrical-circuit element (such as a pair of diodes opposingly coupled together in parallel) has: an impedance less than generally one-thousandth that of the coil portions; a first terminal coupled in parallel with the first and second coil portions; and a second terminal coupled in parallel with the third and fourth coil portions. A localized quench in one coil portion will be quickly shared with the other coil portions to reduce damage from the quench.

REFERENCES:
patent: 4764837 (1988-08-01), Jones
patent: 4956740 (1990-09-01), Williams
patent: 5333087 (1994-07-01), Takechi et al.
Concurrently filed U.S. Patent Application RD-24753, by Dan A. Gross et al., entitled "Superconducting-Magnet Electrical Circuit Having Voltage and Quench Protection", U.S. Application Ser. No. 08/565,140.

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