基于六间隙棒电极结构的沿面击穿型触发真空开关的工作特点(英文)

Characteristics of a Surface-Breakdown Triggered Vacuum Switch with Six-Gap Rod Electrode System

触发真空开关(TVS)是脉冲功率技术领域的关键器件之一。它具有很多优点,譬如宽的工作电压范围、大的通流能力、高的转移库伦量、灵活的触发系统、高的触发可靠性、快速介质恢复、长寿命、以及低噪音等。本文设计了一种基于六间隙棒电极结构的沿面击穿型触发真空开关,制作了触发源并搭建了TVS的实验平台。研究结果表明,TVS样品具有0.05～25kV的工作电压范围,工作电流峰值超过100kA,并且单次转移库伦量大于25C。TVS的总工作时延小于1.5μs,包括了800ns的触发脉冲等待时延和700ns的主间隙导通时延。最后,讨论了TVS的工作极性,理论与实验证明正极性工作方式更可靠,更具优势。

A triggered vacuum switch（TVS） is one of the important apparatuses in the field of pulsed power system,especially the electromagnetic launch.It has many advantages,such as wide operating voltage range,high current capability,high transfer charge,flexible trigger system,high trigger reliability,rapid dielectric recovery,long life,low noise,etc.A sample of surface-breakdown TVS with six-gap rod electrode system was fabricated in this paper.A trigger system was designed and a platform for the TVS test was set up.Experiment results show that,the sample designed has working voltage of 0.05~25kV,working current of more than 100kA in peak value and charge transfer of more than 25C.The total delay of TVS is less than 1.5μs,including the wait time of 800ns and collapse time of 700ns.At last,the working polarities are discussed,showing that the positive working mode is more reliable and advantageous.