| 摘要 |
PURPOSE:To cut apart a superconductive coil from a main circuit continuing exciting operation even when quenching is generated, and to enable to connect the coil to the main circuit again after quenching is dissolved by a method wherein discharge resistors are connected individually in parallel with the superconductive coils, first switches are connected in series to the parallel circuit thereof, and second switches are connected in parallel with the series circuit thereof individually. CONSTITUTION:Discharge resistors 11,... 1n are connected in parallel with superconductive coils 51,...5n through switches 31,...3n individually, first switches 21,... 2n are connected in series to the parallel circuit thereof, and second switches 41,...4n are connected in parallel with the series circuits thereof individually. When quenching is generated in the coil 51 during an exciting current I is flowing in the respective superconductive coils, the switch 41 is closed at first, and then the switch 31 is closed to connect the discharge resistor 11 in parallel with the coil 51. After then, the switch 21 is opened to consume the current of the coil 51 in the discharge resistor 11. When quenching of the superconductive coil 51 is dissolved, the switch 21 is closed, the switch 41 is opened, and after then, by making the switch 31 act as to open, the coil 51 is connected to the main circuit to attain exciting operation again. |
