两路磁开关同步运行技术
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国家自然科学基金资助项目(51607183)

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Synchronization of magnetic switches
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    摘要:

    磁开关因其优异的特性而被广泛用于固态脉冲功率调制器中,基于磁开关的多脉冲发生器的同步运行对产生更高功率的脉冲具有重要意义。与其他高功率开关相比,磁开关存在一种基于磁耦合机制的被动同步技术。通过耦合线圈相连的磁开关能够被动地减少磁开关之间的抖动,使多个磁开关趋于同步运行。设计了一个两路磁开关同步运行实验,实验结果显示差异为2.2 μs和0.3 μs的2个脉冲在引入磁耦合之后差异分别降至0.6 μs和0.1 μs,表明该磁耦合技术能成倍减少两台装置的输出抖动。此外,还针对磁开关同步运行过程及磁耦合机制进行了合理分析,并开展了基于PSpice的磁开关同步电路仿真研究,提出了一种改进型回转器-电容等效电路模型,该电路模型能有效地重现实验结果,为更深入理解磁开关同步运行技术及分析磁耦合机制奠定了基础。

    Abstract:

    The magnetic switch is important for solid-state high power pulse modulators due to its excellent characteristics, such as long lifetime, high stability and high power capacity. Some applications require the synchronization of multiple pulse generators, for example, to obtain higher load power. Magnetic coupling is a simple, passive, maintenance-free technique, which can be utilized to reduce the output timing variations of magnetic switched pulse generators. In this paper, a synchronization experiment of two magnetic switches is carried out. The experimental results show that the time difference between the two pulses is reduced from 2.2 μs and 0.6 μs to 0.3 μs and 0.1 μs respectively after coupling the magnetic switches, which demonstrate that the magnetic coupling technique can make magnetic switches operate synchronously. An improved circuit model based on the gyrator-capacitor approach is established which can effectively simulate the synchronization process of magnetic switches. Analysis about the synchronization mechanism is also given.

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时承瑜,杨汉武,高景明.两路磁开关同步运行技术[J].太赫兹科学与电子信息学报,2021,19(1):170~175

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  • 收稿日期:2019-08-16
  • 最后修改日期:2019-09-19
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  • 在线发布日期: 2021-03-09
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