强激光与粒子束, 2011, 23 (6): 1697, 网络出版: 2011-07-04  

低阻抗脉冲形成网络引线电感的模拟及实验研究

Simulation and experimental study on inductance of low impedance pulse forming network
作者单位
西南交通大学 物理科学与技术学院, 成都 610031
摘要
对2.5 Ω,200 ns低阻抗Blumlein型脉冲形成网络进行3维建模,利用有限元仿真软件,分别采用静电场分析方法及高频分析方法对开关端、负载端的电感进行模拟研究,结果表明: 随着工作频率增大,引线电感值逐渐减小,工作频率为2.5 MHz时,引线内电感可以忽略不计。此时模拟得到的引线电感要比静态模拟结果小10 nH左右;两个开关并联工作时不仅要考虑引线自身的电感,还要考虑同步导通时互感的影响,且互感达到了自感的1/4。使用Pspice软件对模拟结果进行仿真,采用电磁屏蔽后输出波形前沿相对于屏蔽前输出波形前沿要小2.1 ns。实验研究结果表明,采用电磁屏蔽前后输出波形的前沿分别为68.8,65.2 ns,减小量与模拟结果基本吻合。
Abstract
3D model of pulse forming network with 2.5 Ω impedance, 200 ns pulse width was established. Through the finite element analysis and simulation, the induction of the switch part and the load part was simulated and studied. The simulated results show that the induction was decreased with increasing frequency. The inner inductance of lead can be ignored when the frequency equal to 2.5 MHz. The inductance of lead is 10nH less in frequency 2.5 MHz than that in frequency zero. The simulated results also show that the mutual inductance can not be ignored when the switches work in parallel. In order to reduce the induction of lead, the configuration which isolates the switches was designed. The pulse rising time can be reduced 2 ns under the configuration. The experimental results indicate that the rising time was 65.2 and 68.8 respectively when isolates or doesn’t isolate the switches.
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王庆峰, 刘庆想, 张政权, 徐远灿, 胡克松. 低阻抗脉冲形成网络引线电感的模拟及实验研究[J]. 强激光与粒子束, 2011, 23(6): 1697. Wang Qingfeng, Liu Qingxiang, Zhang Zhengquan, Xu Yuancan, Hu Kesong. Simulation and experimental study on inductance of low impedance pulse forming network[J]. High Power Laser and Particle Beams, 2011, 23(6): 1697.

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