Superconducting magnet system with inductive quench heaters

Details Superconducting magnet system with inductive quench heaters Superconducting magnet system with inductive quench heaters

1990-12-03

1994-01-11

Leung, Philip H.

Electric heating

Inductive heating

Specific heating application

361 19, 361141, 335216, 505851, 219660, 219672, H05B 610, H01F 700

Patent

active

052783804

ABSTRACT:
A superconducting magnet coil is protected from local damage due to quenching by inductively driven heaters formed by heater strips embedded in the coil and connected in closed loops. A cold bypass diode shunting the coil winding commutates current out of the magnet when the voltage drop across the region of the coil which has gone normal exceeds the forward bias of the diode. This change in coil current induces sufficient current in the heater loops to cause the entire coil to go normal for uniform dissipation of stored energy throughout the magnet.

REFERENCES:
patent: 3474294 (1969-12-01), Weaver, Jr et al.
patent: 3711744 (1973-01-01), Luton, Jr.
patent: 4688137 (1987-08-01), Urata
patent: 4807084 (1989-02-01), Takechi
patent: 4812796 (1989-03-01), Ries
patent: 4816962 (1989-03-01), Yamada et al.
patent: 4926289 (1990-05-01), Reichert
patent: 4956740 (1990-09-01), Williams

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