| 摘要 |
PURPOSE:To perform current limiting breaking in a high speed by using a high temperature superconducting switch as the opening switch. CONSTITUTION:A low speed capacitor C, which is previously charged by a charging device serving as the current source, connects in series a trigger gap TG serving as the starter switch, high temperature superconducting switch SC and a coil L. The coil L connects in series a discharge gap G as a transfer switch and a plasma focus PF of X-rays source or the like as a load discharge tube. Thus the action is obtained such that the trigger gap TG starts to allow an oscillating current to flow in the coil L through the high temperature superconducting switch SC placed in a superconductive condition. When the first wave of this current reaches a peak value, the switch SC is transferred in a high speed to be placed in a normal conductive condition changing into a high resistor, breaking the current to be limited. As the result, pulse high voltage generating across terminals of the coil L, a large pulse current is allowed to flow in the discharge gap G and the plasma focus PF. |
