Research on the Trigger Mechanism of Parallel Disc Type Laser Triggered Vacuum Switch
Mao Xiaopo1, He Zhenghao1, Wang Ying2, Fan Wenfang1, Lin Huazhong2, Song Siqi1, Tan Fali1
1.State Key Laboratory of Advanced Electromagnetic Engineering and Technology Huazhong University of Science and Technology Wuhan 430074 China; 2.State Key Laboratory of Laser Technology Huazhong University of Science and Technology Wuhan 430074 China
Abstract：High intensity pulsed switching is an important control unit of the pulsed power technology.The triggered vacuum switch (TVS) has the advantages of large flow capacity,fast media recovery rate,and little under voltage ratio.But it also suffers the problems of long conduction delay,big jitter,and easy false trigger.This paper designs a long gap distance laser triggered vacuum switch (LTVS).The conduction mechanism of the LTVS is related to laser ablation.Substances involved in conducting are atom,ion,free electron,and particle.When the gap distance of the LTVS is 12 mm,the withstand voltage is 30 kV.In order to assure the reliable conduction of the LTVS,50 mJ laser energy and 1 064 nm wavelength is used.When the distance to the cathode surface is 0 mm,the conduction delay of the LTVS is 1 μs and the jitter delay is 50 ns.The stable energy of laser ensures the little jitter delay.In this laser triggered way,the conduction delay can be shortened,the electromagnetic interference can be isolated,and the false triggering of switch can be eliminated.
毛晓坡, 何正浩, 王英, 樊文芳, 林华中, 宋思齐, 谈发力. 平面圆盘型激光触发真空开关触发机制研究[J]. 电工技术学报, 2015, 30(9): 87-90.
Mao Xiaopo , He Zhenghao , Wang Ying , Fan Wenfang , Lin Huazhong , Song Siqi , Tan Fali. Research on the Trigger Mechanism of Parallel Disc Type Laser Triggered Vacuum Switch. Transactions of China Electrotechnical Society, 2015, 30(9): 87-90.
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2015, Vol. 30 
