一级Marx压缩的高稳定纳秒脉冲电源的设计

Design of high stability nanosecond pulse power supply based on one-stage Marx compression

针对目前缺乏标准纳秒高压脉冲电源的现状,开展高稳定性纳秒高压脉冲电源回路分析、结构设计及性能测试研究。通过建立纳秒脉冲发生器等效电路模型,仿真计算获得5级初级脉冲发生电路参数,以及一级压缩陡化间隙对纳秒脉冲特性的影响规律。通过纳秒高压脉冲电源结构设计及低抖动电晕稳定开关特性研究,建立高稳定输出的纳秒脉冲电源系统。研制纳秒电阻分压器,建立基于ns及μs量级传递校准测试相结合的刻度因数标定方法,准确获得纳秒电阻分压器的刻度因数。脉冲电源输出特性测试结果表明:纳秒脉冲电源系统可以输出上升时间2.3 ns±0.5 ns、幅值范围10~60 kV的指数纳秒脉冲;输出脉冲电压在全幅值范围内的相对标准偏差不大于±1.5%。

In response to the lack of standard nanosecond high-voltage pulse power supply,this paper carries out the circuit analysis,structural design and performance testing of high-stability nanosecond high-voltage pulse power supply.By establishing the equivalent circuit model of nanosecond pulse generator,the circuit parameters of 5-stage primary pulse generation and the influence law of one-stage compression steepening gap on the characteristics of nanosecond pulse are obtained by simulation.The nanosecond high-voltage pulse power supply structure design and low jitter corona stabilization switching characteristics are studied to establish a nanosecond pulse power supply system with highly stable output.Development of a nanosecond resistive voltage divider and establishment of a scale factor calibration method based on a combination of nanosecond and microsecond scale transfer calibration tests are made to accurately obtain the scale factor of the nanosecond resistive voltage divider.The pulse power supply output characteristics test results show that the nanosecond pulse power supply system can output exponential nanosecond pulses with a rise time of 2.3 ns±0.5 ns and an amplitude range of 10−60 kV;the relative standard deviation of the output pulse voltage in the full amplitude range is within±1.5%.