电压瞬变对高压固态开关的影响

Effect of transient voltage on the solid-state switch

摘要:

对于高压放电回路，高压开关是一个关键器件。高压放电回路中高压固态开关上电压可能出现瞬变，这种瞬变会引起高压固态开关的误触发或者击穿。开关的工作异常将导致整个放电回路的失效。本文从原理上分析了这种失效产生的原因，并且进行了电路仿真，通过仿真分析提出了如何去避免这种失效的发生，给出了相应的防护措施，最后通过实验验证了保护措施的有效性。

Abstract:

High-voltage switch is a key component to discharge circuit. Nevertheless，the voltage on the high-voltage switch in discharge circuit appears transient sometimes，which will cause the spurious triggering or breakage of the high-voltage switch. Furthermore，the abnormity of the high-voltage switch will cause the failure of the discharge circuit. The reason of this kind of failure was explored in this study. The circuit was simulated and analysed. A protection method was proposed to solve this problem according to simulation results. Practical tests were employed on the real circuit，which validated the simulation results and the effectiveness of the protection method.