Superconductive circuit for controlling quench events

Details Superconductive circuit for controlling quench events Superconductive circuit for controlling quench events

1987-11-16

1988-08-16

Wong, Peter S.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Superconductor protective circuits

361141, 323360, 307245, 307306, H02H 900

Patent

active

047648376

ABSTRACT:
A circuit is provided comprising a plurality of series connected superconductive coils. Each of a plurality of series connected shunt resistors is connected in parallel with at least one corresponding series connected superconductive coil. A superconductive switch, which includes a length of superconductive wire, is connected in parallel with the series connected superconductive coils. The switch further includes a first and second heater means which are thermally coupled to the superconductive wire. The first heater means is connectable to an external power supply. The second heater means has a plurality of different sections with each of the shunt resistors connected in parallel to one of the sections so that a quench in any of the superconductive coils causes a section of the second heater means to warm and drive the superconductive switch normal.

REFERENCES:
patent: 3466504 (1969-09-01), Hart, Jr.
patent: 4459495 (1984-07-01), Gheewala
patent: 4559576 (1985-12-01), Ries
patent: 4568908 (1986-02-01), Laskaris et al.
patent: 4586017 (1986-04-01), Laskaris et al.
patent: 4680666 (1987-07-01), Rios

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