缩短两级爆磁压缩发生器输出脉冲宽度的一种有效办法是增大第二级螺旋线圈的锥角,但增大锥角会降低发生器电感压缩比,合理的锥角设计是此类发生器的关键.介绍了三种能带大电感负载、结构紧凑的两级爆磁压缩发生器,第一级结构参数相同,第二级螺旋线圈锥角分别为6°,8°,10°.在电感负载上进行的实验结果表明:其输出电流分别达到140,90和50 kA,电流脉冲宽度分别为12.5,8.5和6.3 μs,对应的名义输出功率分别为7,7和3 GW.

An approach to reducing the pulse duration of the compact two-stage helical explosive magnetic generators (EMGs) is to increase the conical angle of the helical coil in the second stage, but it will result in quick effective inductance decrease of the second stage inner coil. To find the optimal conical angle, three configurations were designed and tested, which have the same first stage but different half-conical angles for the second stage, i.e., 6°,8°,10°, respectively. Experimental results show that the currents on the inductive loads are 140 kA, 90 kA, 50 kA with the pulse durations 12.5 μs, 8.5 μs, 6.3 μs respectively for the three configurations.