Title :
A Gas Switch Triggered by a Microhollow Cathode Discharge (MHCD) Array With Lower Trigger Energy
Author :
Kefu Liu ; Yaqing Teng ; Liuxia Li ; Jian Qiu
Author_Institution :
Inst. of Electr. Light Sources, Fudan Univ., Shanghai, China
Abstract :
A microhollow cathode discharge (MHCD) array was operated at atmospheric pressure with a pulse voltage of 2.5 kV supplied by a trigger circuit. Triggered by this MHCD array, a gas switch with an annular plate structure operated under a voltage of 27 kV with a fall time of 30 ns and a current of 400 A with a rise time of 15 ns was investigated. It is used for discharging the charge stored in a capacitor of 4 nF through a resistor of 50 Ω. The advantages of the switch are obvious: a compact trigger with lower trigger voltage. An electrical model including MHCD capacitance is built, and the simulation results agree well with the experimental results.
Keywords :
pulsed power switches; switchgear; MHCD array; MHCD capacitance; annular plate structure; atmospheric pressure; capacitance 4 nF; current 400 A; electrical model; gas switch; microhollow cathode discharge array; pulse voltage; resistance 50 ohm; time 15 ns; time 30 ns; trigger energy; trigger voltage; voltage 2.5 kV; voltage 27 kV; Arrays; Capacitance; Cathodes; Discharges (electric); Switches; Voltage measurement; Delay time; gas switch; microhollow cathode discharge (MHCD); trigger;
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2012.2235147
