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On the resistance modeling of the fuse opening switches after onset of explosion.

机译：在爆炸开始后，保险丝断开开关的电阻模型。

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摘要

The energy output of a magnetic flux compression generator (MFCG) is fed into the vircator load to generate high power microwave through the pulsed power conditioning system, which has adopted the exploding wires as a opening switches. To find out the governing mechanisms on the behavior of the fuse opening switches, the optimal circuit parameters for maximum efficiency subject to compactness, experimental and theoretical approaches has been conducted. Physical transformation occurring during the explosion of the wires are divided in two processes such that (A) Heating processes: [(1) eating to the melting process, (2) Melting, (3) Heating of the fluid metal in the linear regime, (4) Further heating to the boiling point and beyond, and (5) Onset of the vaporization wave]. (B) Heating-Cooling processes: [(1) Transit of the wave and core heating, and (2) Current interruption (plausible)] and (C) Cooling processes: [(1) vapor expansion, (2) Thermal wave propagation, and (3) Shock wave propagation].; The nonideal plasma produced in the expanding exploding wire column are analyzed over the very wide ranges of plasma parameter such as temperature and density. For the weakly and moderate plasmas the Coulomb logarithm has been modified and extended its applicability in the Spitzer conductivity based on the binary collision models. In the early stages the plasma states have been described using density function theory and the various conductivity models, including Ziman theory and incipient Rydberg state model, have been adopted with modification as wide-range versions. Stressing on the resistance variation after onset of explosions as shockwaves and/or thermal waves propagate the obtained resistance data as a function of wire parameters and energy injected can be used to investigate the interaction with the vircator load, which can be represented as various equivalent circuit possibly assumed for emulating the impedance characteristics of a nonlinear component.
机译：磁通量压缩发生器（MFCG）的能量输出通过脉冲功率调节系统馈入振动器负载，以产生高功率微波，该系统已采用爆炸导线作为断开开关。为了找出控制熔断器断开开关行为的机制，已经进行了针对紧凑性，效率和理论上的最大效率的最佳电路参数。导线爆炸过程中发生的物理转变分为两个过程，（A）加热过程：[（1）进入熔化过程，（2）熔化，（3）线性状态下流体金属的加热， （4）进一步加热至沸点及以上，以及（5）汽化波的开始]。 （B）加热-冷却过程：[（1）波和芯子加热的传递，以及（2）电流中断（可能的）]和（C）冷却过程：[（1）蒸汽膨胀，（2）热波传播，和（3）冲击波传播]。在很宽的等离子参数范围（例如温度和密度）下，分析了在膨胀爆炸丝塔中产生的非理想等离子。对于弱等离子体和中等等离子体，已经基于二元碰撞模型修改了库仑对数并扩展了其在Spitzer电导率中的适用性。在早期阶段，已使用密度函数理论描述了等离子体状态，并采用各种电导率模型（包括Ziman理论和初始Rydberg状态模型）进行了修改，并将其作为宽范围版本。随着冲击波和/或热波的传播，应力在爆炸发生之后的电阻变化成为导线参数的函数，所注入的能量可以用来研究与振动器负载的相互作用，可以表示为各种等效电路可能被假定用于仿真非线性元件的阻抗特性。

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  • 作者

    Kim, Jin-Gi.;

  • 作者单位

    Texas Tech University.;

  • 授予单位 Texas Tech University.;
  • 学科 Engineering Electronics and Electrical.; Physics Fluid and Plasma.
  • 学位 Ph.D.
  • 年度 2002
  • 页码 246 p.
  • 总页数 246
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 无线电电子学、电信技术;等离子体物理学;
  • 关键词

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