Surface-Discharge Switches for High-Performance Closing Applications

Reinovsky, R.E.; Goforth, J.H.; Graham, J.D.

doi:10.1109/tps.2004.835946

Cited by 6 publications

(1 citation statement)

References 2 publications

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“…Conventional high-pressure gas switches, mainly including spark-gap switches and surface-discharge switches, generally operate in the pressure range on the right of the Paschen minimum, exhibiting a high rate of switching, excellent voltage and current handling capabilities, robustness, together with simplicity in construction and operation. However, they are generally restricted to a low PRF by the poor recovery performance of gaseous medium insulation, and their use in repetitive systems can therefore be limited [14]- [16]. Several technical methods can be used to increase the pulse-repetition frequency of the switch, such as introducing a gas flow to accelerate the cooling of the discharge channel or using a gaseous medium with a higher thermal diffusion rate and thermal conductivity, such as hydrogen [17], [18].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Electric Field Inhomogeneity on Repetitive Performance of a Corona-Stabilized Switch

Huang

Yang

2020

IEEE Access

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The corona-stabilized switch has a great potential in pulsed power systems where high pulse repetition frequencies are required. Corona discharge in SF 6 in highly inhomogeneous electric field is utilized to improve repetitive performance of this kind of switch. To clarify how the repetitive performance (insulation recovery and repetitive breakdown stability) of the switch depends on the field inhomogeneity, the insulation recovery and repetitive breakdown stability of a corona-stabilized switch are experimentally investigated and theoretically analyzed. An innovative double-pulse method combining breakdown voltage and discharge channel images is used to measure the insulation recovery of the switch. For different electrodes, their voltage jitters at pulse repetition frequencies of 1-2000 Hz are measured to illustrate the stability of repetitive breakdown. The experimental results are theoretically analyzed from the memory effect and behavior characteristics of the residual plasma, the critical volume and its dynamic characteristics. The results reveal the corona stabilization enhancement effect during the repetitive breakdown in SF 6 in extremely inhomogeneous field. The influence of electrode profile on the propagation of discharge channel shock wave, the decay of residual plasma and the recovery of neutral gas density are clarified. Effect of the electrostatic conditions, including the critical volume and its dynamic characteristics, and the intensity of corona discharge, on the repetitive performance of the switch are also clarified. INDEX TERMS Corona stabilization, electric field inhomogeneity, gas discharge devices, insulation recovery, memory effect.

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Section: Introductionmentioning

confidence: 99%

The Influence of Electric Field Inhomogeneity on Repetitive Performance of a Corona-Stabilized Switch

Huang

Yang

2020

IEEE Access

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Plasma Switches

Hegeler¹

2007

Wiley Encyclopedia of Electrical and Electronics Engineering

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The sections in this article are General Switch Parameters Gas Spark Gaps Surface Discharge Swtches Diffuse Discharge Opening Switch Plasma Opening Switches Plasma Flow Switches Thyratrons Tacitrons Crossatrons Pseudospark Switches Ignitrons

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Note: Printed circuit board based electrically triggered compact rail gap switch

Saxena

Kaushik

Goswami

et al. 2010

Review of Scientific Instruments

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An electrically triggered rail gap switch has been designed over a commercially available copper clad fiberglass sheet commonly used in making printed circuit boards for applications requiring compact design and direct integration to parallel plate transmission lines. Switch performance has been investigated in terms of its inductance, jitter, and gap closing time. With an electrode separation of 9.0 mm, it has been found to have an inductance of 6 nH, gap closing time of 5 ns, and jitter of about 4-10 ns measured at 95% of self-breakdown voltage. An application of this switch has been demonstrated as an electrically exploding foil accelerator developed over the same board and velocities up to 1.6 km/s have been achieved on Kapton flyers with diameter of 3.0 mm and thickness of 125 microm using a compact 1 microF capacitor bank.

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Surface-Discharge Switches for High-Performance Closing Applications

Cited by 6 publications

References 2 publications

The Influence of Electric Field Inhomogeneity on Repetitive Performance of a Corona-Stabilized Switch

The Influence of Electric Field Inhomogeneity on Repetitive Performance of a Corona-Stabilized Switch

Plasma Switches

Note: Printed circuit board based electrically triggered compact rail gap switch

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