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首页> 外文期刊>IEEE Transactions on Plasma Science >Design of High-Voltage Square Pulse Generator Based on Cascade Switches and Time-Delay Driver
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Design of High-Voltage Square Pulse Generator Based on Cascade Switches and Time-Delay Driver

机译：基于级联开关和延时驱动器的高压方波发生器设计

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摘要

In the application of pulsed-power technology, capacitive loads require that high-voltage pulses have fast front and back edges. Using multiple semiconductor switches, insulated gate bipolar transistors (IGBTs) in series with discharge high-voltage capacitors can generate high-voltage pulses. By adding a group of truncation switches, square pulses with fast back edges can be obtained. A novel drive circuit using many transformers with their primary windings in series is proposed to generate two groups of reverse driving signals by changing the dotted terminals on the secondary sides. The dead time between these signals is realized by adding some time-delay circuits. In terms of drive control, both the discharging switches and the truncation switches are triggered synchronously since the primary windings of all transformers are connected in series, which ensures the synchronism of driving signals. Time-delay drive circuits are added to the secondary sides of transformers to ensure a proper dead time between the two groups of driving signals for both discharging and truncation switches. Moreover, all driving power is provided from the single driver on the primary side, greatly simplifying the drive circuit. The voltage balancing of cascade IGBTs is realized by using resistor-capacitor-diode (RCD) snubber circuits. Experiments were carried out over resistive and capacitive loads. Square pulses with a voltage amplitude of 10 kV, a pulsewidth of 8 mu s, a rising time of 157 ns, and a falling time of 78 ns were obtained on a 20-k Omega resistive load. The voltage amplitude, pulsewidth, and frequency are continuously adjustable.
机译：在脉冲功率技术的应用中，容性负载要求高压脉冲具有快速的前后沿。使用多个半导体开关，与放电高压电容器串联的绝缘栅双极型晶体管（IGBT）可以产生高压脉冲。通过添加一组截断开关，可以获得具有快速后沿的方波。提出了一种新颖的驱动电路，该驱动电路使用许多串联有其初级绕组的变压器，通过改变次级侧的虚线端子来生成两组反向驱动信号。这些信号之间的空载时间是通过添加一些延时电路来实现的。在驱动控制方面，由于所有变压器的初级绕组串联连接，因此放电开关和截断开关均被同步触发，从而确保了驱动信号的同步性。延时驱动电路被添加到变压器的次级侧，以确保在用于放电和截断开关的两组驱动信号之间具有适当的死区时间。而且，所有驱动功率均由一次侧的单个驱动器提供，大大简化了驱动电路。级联IGBT的电压平衡是通过使用电阻电容二极管（RCD）缓冲电路实现的。在电阻和电容负载上进行了实验。在20kΩ的电阻负载上，获得了电压幅值为10 kV，脉冲宽度为8μs，上升时间为157 ns，下降时间为78 ns的方波。电压幅度，脉冲宽度和频率是连续可调的。

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  • 来源
    《IEEE Transactions on Plasma Science》 |2019年第9期|4329-4334|共6页
  • 作者

    Rao Junfeng; Guo Longyue; Liu Haotian; Li Zi; Jiang Song;

  • 作者单位

    Univ Shanghai Sci & Technol, Dept Elect Engn, Shanghai 200093, Peoples R China;

    Univ Shanghai Sci & Technol, Dept Elect Engn, Shanghai 200093, Peoples R China;

    Univ Shanghai Sci & Technol, Dept Elect Engn, Shanghai 200093, Peoples R China;

    Univ Shanghai Sci & Technol, Dept Elect Engn, Shanghai 200093, Peoples R China;

    Univ Shanghai Sci & Technol, Dept Elect Engn, Shanghai 200093, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Cascade switches; pulse generator; square pulses;

    机译：级联开关;脉冲发生器;方脉冲;

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