Electronic circuit for the detection and analysis of normal zone

Details Electronic circuit for the detection and analysis of normal zone Electronic circuit for the detection and analysis of normal zone

1981-09-21

1983-03-01

Eisenzopf, Reinhard J.

Electricity: electrical systems and devices

Safety and protection of systems and devices

Superconductor protective circuits

307306, 361141, H02H 302

Patent

active

043756590

ABSTRACT:
A method of detecting and analyzing normal zones in a superconducting coil which involves generating a signal representative of the real power dissipated within the superconducting coil after the background noise and transient conditions within the coil have been accounted for. The power signal is integrated with respect to time to provide a signal proportional to the total energy dissipated within the superconductor which is then compared against a critical reference signal so that a quench signal is generated to immediately disconnect the superconducting coil when the reference signal is exceeded and to allow the coil to discharge its energy into an external device to prevent coil damage. An exemplary circuit for implementing the method is disclosed.

REFERENCES:
patent: 3214637 (1965-10-01), Persson
patent: 3579035 (1971-05-01), Burnier et al.
patent: 4271443 (1981-06-01), Nother
"Detection of Normal Transition and Energy Removal on Superconducting Magnet", Kimura et al., pp. 944-948, 8/29/77.

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