100 Hz, 5 To 40kV Triggered Spark Gap For Medium Power Modulators-猫眼课题宝

DOI：

10.1109/modsym.1994.597099

发表时间：

1994-06

期刊：

Twenty-First International Power Modulator Symposium, Conference

影响因子：

通讯作者：

中科院分区：

其他

文献类型：

作者：

D. Bhasavanich;R. Shaw;S. Hitchcock;P. Creely

一种T - 150型触发管火花隙，单次额定电流为300 kA，已针对在降低电流下朝着100 Hz的重复频率应用进行了评估。通过间隙压力和气体流量设置，开关电压范围从10 kV到40 kV变化。其触发发生器产生8 - 20 kV的脉冲，基于固态技术且通过光纤连接以实现电气隔离。触发能量已降至最低以延长开关的整体使用寿命，在高达100 Hz的频率下输入功率小于75 W。所展示的重复频率、使用寿命和预放电性能表明该开关可作为中功率调制器中引燃管或闸流管的替代品。引言物理国际公司（PI）已推出了一些用于高能电容器组以驱动电发射器的单脉冲闭合开关172。3 - 5为了减小开关的尺寸和重量，增加重复触发能力，并使触发功率最小化，已开发出一种T - 150型触发管气体开关以及TG - 10触发发生器。6在本文中，我们报告了该开关在降低电流下重复触发的初步结果。图1展示了开关 - 触发装置的照片。高度紧凑的TG10B触发发生器基于固态技术且由电池供电，产生20 kV的开路输出电压。该发生器采用光纤隔离以确保在嘈杂环境中安全、可靠地运行。一种交流供电版本（图1中的TG - 1292R）是为更高功率、更高重复频率应用定制的。触发能量被降至最低以限制触发功率。该发生器在高达100 Hz的频率下功耗小于75 W。开关 - 触发装置可通过光纤链路进行控制，使其能够在调制器或电容器组电路中以“浮动”配置使用。 T - I50 TG - 100 TG - 1292R 图1. T - 150型火花隙、电池供电的TG - lOB以及增强型交流供电的TG - 1292R触发发生器的照片 T - 150的单脉冲性能介于高电荷转移火花隙（即PI的双电极、串联注入触发开关，表1 - A）和高压中平面触发开关（见表1 - C中的PI T - 508）之间。TG - 10与其他触发发生器的区别在于其紧凑性以及即使在高重复频率下也具有的低功率要求。表1. T - 150开关相对于电枪开关（A）、马克思开关（C）和引燃管的单脉冲额定值 A. B. C. 串联注入触发管中平面触发开关引燃管气体开关 ST - 4198 ST - 300A T - 150 T - 508 “C”-“D” 540 120 50 - 200 转移（C）积分（MJ/R）作用 135 0.2 T150/TG - 10的性能与尺寸为“D”的引燃管相当，适用于线圈炮驱动器或其他中功率调制器。该开关和TG - 1292R发生器最近已被用作10 Hz、16 kJ/s脉冲发生器的输出开关，用于食品巴氏杀菌。 T - 150的性能展示 T - 150可承受高达300 kA的电流，单次可转移120 C的电荷且无损坏。T - 150的操作参数列于表2。到目前为止，由于电源限制，重复频率性能仅在高达10 Hz以及超过9 kA的峰值电流、3 ps的脉冲宽度（半高全宽）下得到了验证。在20 Hz以及9 kA的条件下也进行了短脉冲串测试。最终性能尚未确定。表2. T - 150已验证的操作参数操作电压 40 kV 已验证的峰值电流 300 kA（单次），10 Hz时为9 kA峰值，3 ps；3 Hz时为15 kA峰值，3 ps 重复频率已验证的电荷转移 120 C/次作用（单次） 16 MJ/R 尺寸和重量直径8英寸，高11英寸；20磅开关气体空气

A trigatron spark gap, T-150, rated at 300 kA for a single shot, has been evaluated for repetition rate applications towards 100 Hz at reduced currents. Switching voltage range was varied from 10 to 40 kV via gap-pressure and gas flow settings. Its trigger generator, producing 8-20 kV pulses, is solid-state based and fiber optically linked for electrical isolation. Trigger energy has been minimized to prolong the overall switch life, drawing input power of <75 W at up to 100 Hz. Demonstrated repetition rate, lifetime, and prefire performance indicated the use of the switch as an alternative to ignitrons or thyratrons in medium power modulators. Introduction Physics International (PI) has fielded a number of single-pulse closing switches172 for high energy capacitor banks to drive electric launchers.3-5 To reduce size and weight of the switch, add a repetitive firing capability, and minimize trigger power, a trigatron gas switch, T-150, has been developed along with the TG-10 trigger generator.6 In this paper, we report on initial results in repetitive firing of the switch at reduced currents. Figure 1 shows a photograph of the switch-trigger package. The highly compact TG1 OB trigger generator is solid-state based and battery powered, producing 20 kV open circuit output voltage. The generator employs fiber-optic isolation to ensure safe, reliable operation in a noisy environment. An ac-powered version (TG-1292R in Figure 1) is customized for increased power, higher repetition rate applications. Trigger energy is minimized to limit the trigger power. The generator draws <75 W at up to 100 Hz. The switch-trigger package can be controlled via fiber optic links, allowing their use in a "floating" configuration in modulator or capacitor bank circuits. T-I50 TG-100 TG-1292R Figure 1. Photograph of T-150 spark gap, batteryoperated TG-lOB, and enhanced ac-powered TG-1292R trigger generator. Single pulse performance of the T-150 lies between those for the high charge transfer spark gaps (namely, PI's two-electrode, seriesinjected trigger switches Table 1-A) and high voltage mid-plane trigger switches (see PI T-508 Table 1-C). TG-10 is distinguishable from other trigger generators in its compactness and low power requirement even at high repetition rates. Table 1. T-150 switch's single pulse ratings relative to electric gun switches (A), Marx switches (C), and ignitrons. A . B . C . Series Injection Trigatron MidIgnitron Gas Switch Plane Trigger Switch ST-4198 ST-3OOA T-150 T-508 "C"-"D" 540 120 50-200 Transfer (C) Integral (MJ/R) Action 135 0.2 T150/TG-10 performance is comparable to size "D" ignitrons, suitable for coil gun drivers or other medium power modulators. The switch and the TG-1292R generator has recently been used as an output switch for the 10 Hz, 16 kJ/s pulser intended for food pasteurization? T-150 Demonstrated Performance T-150 handles currents to 300 kA and transfers 120 C in a single shot with no damage. Operating parameters for the T-150 are listed in Table 2. To date, repetition rate performance has been demonstrated only to 10 Hz and over 9 kA peak current, 3 ps pulse width (FWHM), owing to power supply limitation. Short bursts have been performed at 20 Hz also at 9 kA. Ultimate capabilities are not yet established. Table 2. T-150 demonstrated operating parameters. Operating Voltage 4QkV Demonstrated Peak Current Repetition Rate Demonstrated Charge Transfer 120 C/shot Action (Single Shot) 16 MJIR Size and Weight 300 kA (Single Shot) 10 Hz, at 9 kA p e a 3 ps 3 Hz, at 15 kA p e a l 3 ps Switching Gas Air 8 in. dia, 11 in. high; 20 lbs

100 Hz, 5 To 40kV Triggered Spark Gap For Medium Power Modulators

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