IEEE Transactions on Power Apparatus and Systems · 1983 · 44 citations · 20 references
Natural SciencesNuclear EngineeringPhysicsElectromagnetismFusion EngineeringPlasma PhysicsCurrent DriveHigh-temperature PlasmasPlasma ConfinementPlasma HeatingSpace PlasmasTokamak EngineeringArc DischargesArc Plasma PhysicsArc StabilityFusion Reactor PhysicsOhmic HeatingTokamak PhysicsTokamak PlasmasVoltage
Vacuum arc/magnetic field interactions are reviewed and extended. An axial magnetic field (parallel to current flow) produces a stable and diffuse vacuum arc. These properties have been used to build a reliable dc switch for the Tokamak Fusion Test Reactor at Princeton. The switching duty for this Ohmic Heating Interrupter involves repetitive interruption of 24kA dc against a 27kV recovery voltage. A transverse magnetic field (perpendicular to current flow) produces an unstable arc with an ensuing high arc voltage. This property has been used to complete a metallic return transfer breaker for the Pacific HVDC Intertie, here the switching duty involves interruption of currents up to 2200A dc against an 80kV recovery voltage.
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