Electricity: electrical systems and devices – Safety and protection of systems and devices – Superconductor protective circuits
Patent
1983-02-10
1984-08-21
Salce, Patrick R.
Electricity: electrical systems and devices
Safety and protection of systems and devices
Superconductor protective circuits
307306, 307245, H02H 700, H01F 722
Patent
active
044673841
ABSTRACT:
A protective device for use with a DC regulated power supply for supplying DC current to a superconducting magnet coil includes a pair of flywheel diodes and a protective resistance connected in parallel with the superconducting magnet coil. When the DC regulated power supply malfunctions, the superconducting magnet coil is severed from the power supply, and the flywheel diodes take up the energy stored in the superconducting magnet coil to reduce the current flowing through the DC regulated power supply to zero instantaneously. When the superconducting magnet coil has a fault, the coil is separated from the DC regulated power supply, and the protective resistance takes up the energy stored in the superconducting magnet coil.
REFERENCES:
patent: 3214637 (1965-10-01), Persson
patent: 3304466 (1967-02-01), Minnich et al.
patent: 3581113 (1971-05-01), Kafka
patent: 3711744 (1973-01-01), Lvton, Jr.
Purcell, J. R., "Report on the Argonne National Laboratory 12-ft Hydrogen Bubble Chamber Magnet System," Proceedings, pp. 560-563, Oxford, 1967.
Mitsubishi Denki & Kabushiki Kaisha
Salce Patrick R.
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