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Compact pulsed power generator using an inductive energy storage system with two-staged opening switches

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3 Author(s)
Shimomura, N. ; Dept. of Electr. Eng., Kumamoto Univ., Japan ; Akiyama, H. ; Maeda, Sadao

The pulsed power generator, named ASO-I, is extremely compact and light in comparison with a conventional pulsed power generator, which consists of a Marx bank and a water pulse forming line. The ASO-I has a two-staged opening switch, consisting of fuses in water and a plasma erosion opening switch, and can be operated hundreds of times a day at an output power of 230 kV and 35 kA. The parallel fuses are effective for power multiplication, and small differences in length of the parallel fuses do not influence the output power. The risetime of current through the short-circuit load decreases with the increase of the gap length of the spark gap, which is placed between the fuses and the load. The plasma erosion opening switch can be operated as a second opening switch, and the risetime of the current through the short-circuit load decreases from 250 to 10 ns. The maximum resistance of the plasma erosion opening switch is 3.5 Ω with an open-circuit load

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Plasma Science, IEEE Transactions on  (Volume:19 ,  Issue: 6 )