分析了大功率激光脉冲电源高储能密度电容器快速保护的必要性,提出了电感和特种熔断器快速保护技术路线,介绍了快速保护熔断器设计方法.试验表明,所研制的熔断器故障情况下可在四分之一周期时间内快速动作,使电容器反向电压不超过10%,已成功应用于神光Ⅲ能源模块高储能密度电容器的保护.

This paper analyzes the necessity of fast protection for capacitor bank with high specific storage used in SG-Ⅲ high power laser. A technical scheme with inductor and tailor-made fuse was proposed. Especially the design of fast protective fuse was introduced. The experiments demonstrated that the fast protective fuse can take action within a quarter of first cycle of current and limit the voltage reversal under 10%. The design of the protection can meet the project requirements and can reduce the damage of PPS to the lower extent and provent the personnel safe and collateral property from the all threats.