Plasma switch and switching method with fault current interrupti

Details Plasma switch and switching method with fault current interrupti Plasma switch and switching method with fault current interrupti

1994-12-27

1997-03-04

Pascal, Robert

Electric lamp and discharge devices: systems

Discharge device load

Electromagnetic influenced discharge device

31511141, 315338, 361 5, 313156, 313161, 313162, 31323141, H01J 1714

Patent

active

056082975

ABSTRACT:
A plasma switch is provided which can limit fault currents to a range that is elecrostatically interruptible by a control grid. The switch includes magnets that generate a first magnetic vector which cooperates with an electric field to generate a plasma, the density of which is a function of the magnitude of the first magnetic vector. A stalling coil is arranged to generate a second magnetic vector that opposes and cancels a portion of the first magnetic vector in response to a fault current through the switch. This establishes a stalling condition in which the plasma density falls and a plasma potential gradient is set up in the switch. In this unstable condition, the plasma current is interruptible by the control grid.

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