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固态MARX发生器的自动控制研究

饶俊峰 杨世龙 王永刚 姜松 李孜

饶俊峰, 杨世龙, 王永刚, 等. 固态MARX发生器的自动控制研究[J]. 强激光与粒子束. doi: 10.11884/HPLPB202133.200328
引用本文: 饶俊峰, 杨世龙, 王永刚, 等. 固态MARX发生器的自动控制研究[J]. 强激光与粒子束. doi: 10.11884/HPLPB202133.200328
Rao Junfeng, Yang Shilong, Wang Yonggang, et al. Research on automatic control of solid state Marx generator[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202133.200328
Citation: Rao Junfeng, Yang Shilong, Wang Yonggang, et al. Research on automatic control of solid state Marx generator[J]. High Power Laser and Particle Beams. doi: 10.11884/HPLPB202133.200328

固态MARX发生器的自动控制研究

doi: 10.11884/HPLPB202133.200328
基金项目: 国家重点研发计划数字诊疗专项(2019YFC0119100);国家自然科学基金青年基金项目(51707122);上海市青年科技英才扬帆计划(20YF1431100)
详细信息
    通讯作者:

    饶俊峰(1985—),男,博士,副教授,主要从事全固态高压脉冲发生器和低温等离子体应用等方面的研究工作;jfrao@usst.edu.cn

  • 中图分类号: TM832

Research on automatic control of solid state Marx generator

  • 摘要: 为了进一步推广固态Marx发生器的应用,实现输出脉冲波形的直观显示,提高电压调节精度,缩短充电调压时间,有必要对固态Marx发生器的自动控制进行研究。以现场可编译门阵列(FPGA)作为控制器,将输出电压、频率、脉宽、过电流阈值等参数以及故障检测及指示直接显示在液晶屏上,实现可视化设置和调节,在固态Marx发生器的输出端并联分压电路和高速数模转换电路,对输出的高压脉冲采样,一方面用于闭环PID控制实现分段式快速充电和输出电压精准化调节,另一方面用于在虚拟示波器中实时显示输出脉冲电压的基本波形。此外,在电路中加入了故障检测和保护机制,迅速检测电路中出现的过温、过电流等故障并对其及时停机响应以保护脉冲电源和操作人员安全。在20级的固态方波Marx发生器样机中产生的重频方波脉冲电压波形表明,该样机已经初步实现自动化控制,并能可靠运行。
  • 图  1  Marx发生器自动控制电路结构图

    Figure  1.  Marx generator automation structure diagram

    图  2  固态方波Marx发生器主电路原理图

    Figure  2.  Themain circuit of solid-state rectangular Marx generator

    图  3  驱动电路结构图

    Figure  3.  The drive circuit diagram

    图  4  充电管和放电管的控制时序图

    Figure  4.  The time sequence of the control signalsfor charging and discharging switches.

    图  5  过温保护电路

    Figure  5.  Over-temperature protection circuit

    图  6  过温故障警示界面

    Figure  6.  Over-temperature indication

    图  7  过温时电信号的响应波形

    Figure  7.  Thewaveforms of electric signalsunder over-temperature condition.

    图  8  阈值可调的过电流保护电路

    Figure  8.  Overcurrent protection circuit withadjustablethreshold

    图  9  过电流故障警示界面

    Figure  9.  Overcurrent indication

    图  10  分压采样电路

    Figure  10.  Voltage dividersampling circuit

    图  11  增量式PID控制流程框图

    Figure  11.  Theflow chart of incremental PID control

    图  12  仿真用的分压电路图

    Figure  12.  The simulating circuit of the voltage divider

    图  13  分压电路仿真波形

    Figure  13.  The simulating waveform of the voltage divider circuit

    图  14  分段式PID调压输出电压波形

    Figure  14.  The generated voltagewaveform with segmented PID control

    图  15  不同设定电压下的输出电压波形

    Figure  15.  Voltagewaveforms at various setting voltage

    图  16  不同脉宽下输出电压波形

    Figure  16.  Voltage waveforms with different pulse widths

    图  17  1 kHz输出电压波形

    Figure  17.  Voltagewaveformat 1 kHz

    图  18  3 kHz输出电压波形

    Figure  18.  Voltagewaveform at 3 kHz

    图  19  示波器真实输出波形

    Figure  19.  Voltage waveformobtainedfromtheoscilloscope

    图  20  虚拟示波器输出波形-VGA

    Figure  20.  Voltagewaveform shown in a virtual oscilloscope -VGA

    图  21  虚拟示波器输出波形-LCD

    Figure  21.  Voltagewaveformshown in virtual oscilloscope -LCD

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出版历程
  • 收稿日期:  2020-12-09
  • 修回日期:  2021-03-18
  • 网络出版日期:  2021-03-30

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