皮秒脉冲功率技术理论模型及其优化设计

Theoretical model and optimum design of picosecond pulse generator

为了产生100～500ps，200500kV，1～10kA数量级的皮秒放电脉冲，建立了一个皮秒脉冲发生器理论模型，并提出利用增益系数极值法，确定其最大兼容工作点，相对于纳秒脉冲成形线，皮秒脉冲成形线实现了90％，70％，85％的归一化电压增益、能量增益和放电功率增益。为了最大限度地降低皮秒脉冲成形线的载压时间，提高系统的绝缘安全因子，利用华罗庚0．618优算法，设计了电压传输系数。在纳秒脉冲成形线与皮秒脉冲成形线阻抗比值等于1．63条件下，在4倍和6倍皮秒脉冲成形线时间之内，归一化电压增益、能量增益和放电功率增益就可以分别达到94％，72％，89％与99％，53％，97％。

To generate 200-500 kV, 1-10 kA picosecond（ps） pulse.s with 100-500 ps duration, a theoretical model of ps pulse generator has been suggested. The extreme value method has been proposed for the choice of the operation state with the highest gain coefficients, and the derived ps pulse forming line（PFL） achieved normalized gain coefficients of output voltage, energy and power, respectively, of 90%, 70% and 85 %. Finally, the impedance ratio of ns PFL to ps PFL was optimized to shorten the loading time of the 500 kV high voltage on the ps-PFL. At the ratio of impedances 1.63, the gains of the output voltage, energy and power reach 94%, 72% and 89% at the time of 4 ps-PFL pulse-widthes, and 99%, 53% and 97% at the 6 ps-PFL pulse widthes, respectively.