Research on the current-zero period of vacuum arc interruption and equivalent model of post-arc gap

A vacuum interrupter reaches its interruption limit once high-current anode phenomena occur. High-current anode modes lead to an increase of the anode surface temperature and an increased generation of metal vapor, which may result in a weakening of the dielectric recovery strength after current zero. In this work, different discharge modes in a vacuum arc for AC 50 Hz including diffuse, footpoint, anode spot type 1 and type 2, and anode plume are investigated. Electrodes made of CuCr7525 with diameter of 10 mm are used. The final gap length is about 20 mm. Time and space resolved optical emission spectroscopy is used to examine the temporal and spatial distribution of atomic and ionic copper lines. The distribution of atomic and ionic lines parallel and perpendicular to the anode surface is investigated. Radiator density is also determined for CuI, CuII, and CuIII near the anode surface.

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Experimental investigation on the characteristics of vacuum arc in the process of DC interruption based on artificial current zero

24th ISDEIV 2010 ◽

10.1109/deiv.2010.5625874 ◽

2010 ◽

Cited By ~ 1

Author(s):

Xiaochuan Song ◽

Zongqian Shi ◽

Chang Liu ◽

Hongyi Yang ◽

Ming Ma ◽

...

Keyword(s):

Experimental Investigation ◽

Vacuum Arc ◽

Current Zero

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Anode Temperature and Plasma Sheath Dynamics of High Current Vacuum Arc After Current Zero

IEEE Transactions on Plasma Science ◽

10.1109/tps.2013.2266920 ◽

2013 ◽

Vol 41 (8) ◽

pp. 2022-2028 ◽

Cited By ~ 11

Author(s):

Anton V. Schneider ◽

Sergey A. Popov ◽

Alexander V. Batrakov ◽

Gabriela Sandolache ◽

Hans Schellekens

Keyword(s):

Plasma Sheath ◽

Vacuum Arc ◽

High Current ◽

Anode Temperature ◽

Current Zero

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Measurement of the Neutral Copper Vapor Density around Current Zero of a 500-A Vacuum Arc Using Laser-Induced Fluorescence

IEEE Transactions on Plasma Science ◽

10.1109/tps.1985.4316476 ◽

1985 ◽

Vol 13 (6) ◽

pp. 577-581 ◽

Cited By ~ 46

Author(s):

G. Lins

Keyword(s):

Laser Induced Fluorescence ◽

Vacuum Arc ◽

Vapor Density ◽

Copper Vapor ◽

Current Zero

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Experimental study of sheath dynamics after current zero of AMF-stabilized vacuum arc

2012 25th International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) ◽

10.1109/deiv.2012.6412501 ◽

2012 ◽

Cited By ~ 1

Author(s):

A. Schneider ◽

S. Popov ◽

H. Schellekens ◽

G. Sandolache ◽

A. Batrakov

Keyword(s):

Experimental Study ◽

Vacuum Arc ◽

Current Zero

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Properties of Vacuum Arc Influenced by Electrode Diameter and Material in TMF Contact Based on Forced Current Zero

Plasma Physics and Technology Journal ◽

10.14311/ppt.2017.1.36 ◽

2017 ◽

Vol 4 (1) ◽

pp. 36-39

Author(s):

W. Huo ◽

J. Wu ◽

Y. Deng ◽

X. Jin ◽

L. Zhu

Keyword(s):

Electrical Equipment ◽

Transverse Magnetic ◽

Vacuum Arc ◽

Expansion Velocity ◽

Electrode Diameter ◽

Vacuum Interrupter ◽

Dc Power ◽

Electric Aircraft ◽

Current Zero ◽

Supply Systems

With the increase in electrical equipment in More/All Electric Aircraft, 270 V dc power supply systems will be needed. One method for DC interruption is forced current zero (FCZ). Based on FCZ technology with transverse-magnetic-field (TMF) contact, the spiral-type contacts are designed. Experiments with different currents are carried out with contact diameters being 30 mm, 40 mm, and 50 mm, and arcing surface materials Cu-W80 alloy and Cu-Cr50 alloy respectively. It is indicated by the experimental results that breaking capacity of vacuum interrupter and vacuum arc appearance are closely related to the electrode diameter and material. For the same size of electrode diameter, the breaking capacity in Cu-Cr50 is better than that in Cu-W80. With increasing electrode diameter, arc column expansion velocity and diameter increase gradually. Breaking capacity is increasing with larger contact diameter.

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