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为解决高功率固体激光装置能源系统金属化膜储能电容器组两种故障模式的保护问题,分析了相应的两种保护方法的优点和缺点,其中重点研究并改进了爆炸丝保护方法。根据Tucker的爆炸丝物理模型分析爆炸丝气化结束前的物理过程发现,由于保护元件在爆炸丝气化过程中会出现较高的过电压,导致爆炸丝灭弧困难,由此采用在保护元件上并联火花隙的改进方法,通过火花隙释放保护电感的储能,抑制过电压的产生以利于爆炸丝熄弧。实验结果说明了改进电路的原理和有效性,进一步工程化后,有可能较好地解决高功率固体激光装置能源系统金属化膜储能电容器组的保护问题。
In order to solve the two kinds of failure mode protection problems of high energy solid laser device energy system metalized film storage capacitor bank, the advantages and disadvantages of two kinds of protection methods are analyzed. The methods of explosion wire protection are emphatically studied and improved. According to Tucker’s physical model of the explosive wire, the physical process before the end of the explosive wire gasification was analyzed. It is found that due to the high overvoltage of the protective element in the gasification of the explosive wire, it is difficult to extinguish the explosive wire, On the parallel spark gap improved method, through the release of spark gap to protect the energy storage inductor to suppress over-voltage generated in favor of explosion wire arc. The experimental results show the principle and validity of the improved circuit. After further engineering, it is possible to solve the protection of metallized film storage capacitor banks in high power solid state laser devices.