Motion and Splitting of Vacuum Arc Column in Transverse Magnetic Field Contacts at Intermediate-Frequency

Zhu, Linggang; Wu, Jianwen; Yuan, Jiayi

doi:10.1088/1009-0630/16/5/03

Cited by 18 publications

(5 citation statements)

References 18 publications

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“…The multiple arc column phenomena are very similar to the AC vacuum arc. A single arc column can only carry limited current [22]. The average number of arc columns is proportional to the arc current, which is related to the cathode material.…”

Section: Circuit Conditionsmentioning

confidence: 99%

“…In Masui's paper, the transition to the secondary arc is the time interval from inception of the primary arc to inception of the secondary arc, and the detailed formation of the secondary arc is not discussed. The vacuum arcs have been studied numerous times in vacuum circuit breakers [19][20][21][22][23]; some of the vacuum arc mechanisms can also be used to explain the arc characteristics.…”

Section: Introductionmentioning

confidence: 99%

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The characteristics of primary and secondary arcs on a solar array in low earth orbit

Zhu

Qiao

et al. 2017

Plasma Sci. Technol.

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In this paper, the characteristics of the primary arc and secondary arc on a solar array in low earth orbit (LEO) are investigated. The vacuum plasma environment in LEO has been used to study the primary arc and secondary arc of a high-voltage solar array. Silicon solar cells with rigid substrate specimens are used for the experiment. The series-parallel spacing of the silicon solar cells is 1 mm. The string currents of the solar cells are 0.7 A, 1.5 A and 2 A. The primary arc and secondary arc are photographed by high-speed cameras. The differences between the primary arc and secondary arc are observed. The secondary arc can be observed before the primary arc is extinguished. The primary arc is a single arc when the string current is 0.7 A. Multiple arc columns are accompanied by higher arc current. Two arc columns of the primary arc can be observed at 1.5 A string current and 2 A string current. The multiple primary arc columns are related to higher bias voltage. The threshold for sustained arcing is near 145 V/0.7 A, 105 V/ 1.5 A and 100 V/2 A at 1 mm string gap. Moreover, the transition time of secondary arc formation is analyzed, and found to be about 10-13 μs. The string currents, string voltages and primary arc have no effect on the transition time of the secondary arc formation.

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Section: Circuit Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The characteristics of primary and secondary arcs on a solar array in low earth orbit

Zhu

Qiao

et al. 2017

Plasma Sci. Technol.

Self Cite

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“…The duration of the fixed column arc was 2–3 ms and had little dependence on the current and arcing time. Zhu et al studied the arc appearances and arc characteristics of TMF contacts under intermediate frequency (400–800 Hz). Three arc modes were identified: expansion arc column, moving arc, and diffuse arc.…”

Section: Introductionmentioning

confidence: 99%

Study on transition process of vacuum arc under transverse magnetic field

Liu

Xiu

Wang

et al. 2019

Contributions to Plasma Physics

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The transverse magnetic field (TMF) drives the vacuum arc to move along the surface of the contacts to prevent the local overheating and melting of the contact surfaces. The arcing process has great influence on the breaking capacity of short‐circuit current. In this paper, the arcing process between three types of TMF contacts was investigated. The transition process of an arc from the ignition stage to the diffusion stage was discussed. The transition moment, transition gap distance, and transition current were obtained. It was found that the axial magnetic field component of TMF contacts affected the arc transition process.

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“…The duration of the fixed column arc was 2-3 ms and had little dependence on the current and arcing time. Zhu et al [7][8][9] studied the arc appearance and arc characteristics of TMF contacts under intermediate frequency (400-800 Hz). Three arc modes were identified: an expansion arc column, moving arc and diffuse arc.…”

Section: Introductionmentioning

confidence: 99%

Arc characteristics during the instability stage on transverse magnetic field contacts

Pang

Liu

Xiu

et al. 2018

Plasma Sci. Technol.

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The arcing process greatly affects the breaking ability after current zero. The instability stage is the transition stage from the ignition to the movement stage, which affects the arc movement characteristics. In this paper, the arc characteristics during the instability stage on spiral-type contacts were investigated using a high-speed video camera. A multi-column parallel instability mode and a single-column instability mode were found during the instability stage. The arc appearance and constriction degree changed rapidly. The arc voltage usually increased accompanied by fluctuations. In addition, it was found that the current significantly influenced the arc mode and duration in the instability stage. With increased peak current, the probability of a single-column instability mode increased, and the fluctuation range and average time decreased.

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Motion and Splitting of Vacuum Arc Column in Transverse Magnetic Field Contacts at Intermediate-Frequency

Cited by 18 publications

References 18 publications

The characteristics of primary and secondary arcs on a solar array in low earth orbit

The characteristics of primary and secondary arcs on a solar array in low earth orbit

Study on transition process of vacuum arc under transverse magnetic field

Arc characteristics during the instability stage on transverse magnetic field contacts

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