触发时序对直线型脉冲变压器输出参数的影响  

Effect of triggering sequences on output parameters of linear transformer driver

作　　者：刘鹏[1] 孙凤举[2] 尹佳辉[2] 梁天学[2] 姜晓峰[2] 刘志刚[2] 邱爱慈[1] 

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,西安710049 [2]西北核技术研究所,西安710024

出　　处：《强激光与粒子束》2011年第5期1397-1401,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金重大项目(50637010);西安交通大学电力设备电气绝缘国家重点实验室资助课题(EIPE09207)

摘　　要：利用通用电路模型程序Pspice,建立了包含60级感应腔串联的单路直线型脉冲变压器(LTD)电路模型,次级传输线采用去离子水绝缘,计算分析了感应腔触发时序对LTD输出参数的影响。结果表明,控制触发时序能够显著改变LTD型驱动源的输出参数。当控制触发时序使得各级感应腔内的开关在闭合前承受一定过电压时,LTD输出电流比单级感应腔同等条件下的输出电流具有更短前沿和更高幅值。假定LTD开关过压击穿电压为400 kV,通过触发时序的优化可提高LTD装置输出性能:前沿从56.5 ns减少至12.5ns,峰值从1 018 kA提高至1 340 kA。Ultrahigh pulsed power with short rise time has been needed in many applications.For single linear transformer driver（LTD） module with sixty cavities connected in series,this paper has explored the effect of the cavity-triggering sequences on the output current parameters of the LTD module and discussed the possibility to optimize the output parameters of single LTD module through adjusting the triggering time of each cavity.The results indicate that the current shapes of single LTD module could be adjusted effectively through adjusting the cavity triggering sequence.And the output current will have shorter risetime and higher peak if the switches in each cavity are closed after the arrival of the electromagnetic pulses from its neighbor immediately upstream.With the insulation level of present switches used in LTD facilities considered,a pulsed current with the risetime of 12.5 ns reduced by a factor of 4 from 56.50 ns and the peak of 1 340 kA increased by 30% from 1 018 kA could be generated by the LTD module when the cavity-triggering sequence is optimized to make the voltage across the switches before closure increase from DC charging voltage 200 kV to pulse voltage of 400 kV.

关 键 词：快放电直线型变压器驱动源 触发时序 感应腔 上升时间 峰值电流 

分 类 号：TN501[电子电信]