直线变压器驱动源两单元模块实验研究

Double-cell experimental study of linear transformer drivers

基于脉冲成形加感应叠加技术路线是实现脉冲功率小型化的重要发展方向之一。介绍了设计的直线变压器驱动源单元模块结构,每一单元模块馈入阻抗为2.5Ω、脉冲宽度为200ns的高压脉冲,两个模块输出的高压脉冲经过阴极杆感应叠加后输出至负载。实验结果表明:在工作电压40kV、重复频率20Hz及40Hz条件下,两个单元模块经磁芯感应叠加后输出波形的抖动约为2ns,波形质量与脉冲形成网络直接对匹配负载放电时十分吻合,且各次波形的重复性、一致性较好。

The technical path combining pulse forming with inductive adding is one of the important candidates to realize pulsed power miniaturization.In this paper,the cell structure of the linear transformer driver（LTD）,which is based on pulse forming network（PFN）,with impedance 2.5 Ω and pulse width 200 ns is introduced.The outputs of two such LTDs are inductively added to a load through the cathode pole,which forms a double-cell module based on the LTDS.The experiment results show that the high-voltage pulse waveform from the double-cell module at charging voltage of 40 kV and repetition frequency of 20 Hz/40 Hz accords with that from PFN discharged directly,and its jitter is about 2 ns.The coherence of the output pulse waveforms is quite good at repetition mode.