Influence of Different Parameters on Flashover Propagation on a Solar Panel

Inguimbert, Virginie; Siguier, Jean-Michel; Sarrailh, Pierre; Matéo‐Vélez, Jean-Charles; Payan, D.; Murat, Gaël; Baur, C.

doi:10.1109/tps.2017.2686653

Cited by 6 publications

(1 citation statement)

References 13 publications

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“…IV. PLASMA VELOCITIES CANNOT BE REDEFINED Some investigators, seeing the difference between their measured plasma velocities and the Bohm velocity, have sought to redefine the very concept of plasma velocity [3], [21]. They wish to use the time of "full discharge," "peak current," or "current onset" to define plasma velocity at a given distance.…”

Section: Peak Current Times or Light Emission Peak-times Versus Distance Do Not Reliably Indicate Plasma Velocitymentioning

confidence: 99%

Arc Plasma Propagation and Arc Current Profiles

Ferguson

Hoffmann

Plis³

et al. 2019

IEEE Trans. Plasma Sci.

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When electrical arcs occur in space, a plasma expands away from the arc-site, neutralizing adjacent surfaces (a current), and causing a current to be produced at the arc-site (source of neutralization current). The speed of this plasma expansion depends on the plasma species, which in turn depend on the ionizable materials near the initial electrostatic discharge (ESD) site. Based on laboratory experiments undertaken as part of the U.S. round-robin experiments on plasma propagation speed, a scenario for arc plasma propagation and arc current profiles is presented. It is found that the complex arc current profiles invariably seen in laboratory arcs are due to a multicomponent plasma, where each plasma species expands away from the arc-site supersonically and with approximately constant velocity. Apparent slowing of the arc plasma seen in high-speed video cameras is caused by the density depletion of the lightest (most rapid) plasma component first and heavier (slower) plasma components later. Electron currents onto surfaces originate at the arc-site, and the conductive arc plasma is a conduit for these currents. Sudden, simultaneous onset of arc currents at all distances from the arc-site is the result of blowoff currents, making all surfaces more positive, which then attract ambient electrons. Sudden, simultaneous cutoff of arc currents at all distances from the arc-site is the result of collapse of the plasma due to conditions at the arc-site. The ionization at the arc-site during the arc is seen to be rapidly variable, with variations on the nanosecond timescale. This model not only makes the varied plasma velocities reported in the literature understandable, but it also makes predictions about the arc radiofrequency interference (RFI), contamination produced by the arcs, and the total charge in an arc possible. Arc-site materials are suggested which, being hard to ionize and with massive ions, minimize arc currents and maximize arc current rise times.

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Section: Peak Current Times or Light Emission Peak-times Versus Distance Do Not Reliably Indicate Plasma Velocitymentioning

confidence: 99%

Arc Plasma Propagation and Arc Current Profiles

Ferguson

Hoffmann

Plis³

et al. 2019

IEEE Trans. Plasma Sci.

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Simulation of the electrostatic charging of the MetOp-SG satellites in the polar auroral zone

Imhof

2019

CEAS Space J

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Study on plasma expansion model of primary discharge on spacecraft solar array

WEI 尉,

(武建文),

ZHU 朱

2024

Plasma Sci. Technol.

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In the space plasma environment, primary discharge may occur on the solar array and evolve into a destructive sustained arc, which threatens the safe operation of the spacecraft. Based on the plasma expansion fluid theory, a new multicomponent plasma expansion model is proposed in this study, which takes into account the effects of ion species, ion number, initial discharge current, and Low Earth Orbit (LEO) plasma environment. The expansion simulation of single-component and multicomponent ions is carried out respectively, and the variations of plasma number density, expansion distance, and speed during the expansion process are obtained. Compared with the experimental results, the evolution of propagation distance and speed is closed and the error is within a reasonable range, which verifies the validity and rationality of the model. The propagation characteristics of the primary discharge on the solar array surface and the influence of the initial value on the maximum propagation distance and the propagation current peaks are investigated. This study can provide important theoretical support for the propagation and evolution of the primary discharge and the key behavior of the transition to secondary discharge on spacecraft solar array.

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Influence of Different Parameters on Flashover Propagation on a Solar Panel

Cited by 6 publications

References 13 publications

Arc Plasma Propagation and Arc Current Profiles

Arc Plasma Propagation and Arc Current Profiles

Simulation of the electrostatic charging of the MetOp-SG satellites in the polar auroral zone

Study on plasma expansion model of primary discharge on spacecraft solar array

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