Development of a 3.3 kJ system and a 300 kJ system for Triggered Vacuum Switch

We have developed a 3.3 kJ system and a 300 kJ system to fabricate a sealed-off triggered vacuum switch (TVS). The goal of fabricated sealed-off TVS was a hold-off voltage of 20 kV, a maximum peak current of 150 kA, a maximum charge of 60 C, and a pulse width of 2 ms. In order to achieve the goal, we have progressed a fundamental research to understand the characteristics of the sealed-off TVS. The fabrication of the sealed-off TVS has processed based on the fundamental research. The performance estimation has conducted for the fabricated product. The 3.3 kJ system has been developed to employ the fundamental research and the fabrication process. Whereas, the 300 kJ system has been optimized to estimate the performance for the fabricated sealed-off TVS. The basic structure of the 3.3 kJ system and the 300 kJ system are same. They are consisted of a charging part and a discharging part. The 3.3 kJ system has used a charging capacitor bank of 16.52 μF and a discharging parallel-plate inductor of 1 μH. The 300 kJ system has employed a charging capacitor bank of 1.256 mF and a discharging bus-bar inductor of 10 μH. The estimated performance of the fabricated sealed-off TVS has achieved a hold-off voltage of 20 kV, a maximum peak current of 152 kA, a maximum charge of 90 C, and a pulse width of 2 ms.