串联晶闸管动态电压测试技术研究

Study on dynamic voltage test technology of series thyristors

为有效监测脉冲功率源系统中串联晶闸管在同步触发条件下动态电压变化,建立晶闸管电路等效模型,计算不同衰减电路模块对于串联晶闸管均压特性的影响,并在此基础上设计了一种特殊的阻容串联型分压器用于采集串联晶闸管导通过程中的电压信号。计算结果表明,此分压器可有效改善串联晶闸管的动态均压特性,对于串联晶闸管同步导通过程中电压变化情况进行精确监测。经实验验证,该方案可以有效解决脉冲功率源系统中串联晶闸管导通过程的信号采集问题。

To monitor variation of voltage signal on series thyristors from triggered to conducting in pulsed power source,there is a equivalent circuit model of thyristor is established,and the effect of different circuit module are calculated.A special capacitive resisor divider is designed to acquire the voltage signal base on the analysis,the program have a effective improve to dynamic characteristic of series thyristors and the variation of voltage signal can be detected precisely.Pulse power source is in great agreement with the new divider after experimental verification.