DC Vacuum Arc Extinction in a Transverse Axisymmetric Magnetic Field

Alferov, D. F.; Belkin, Gary S.; Yevsin, D.V.

doi:10.1109/tps.2009.2025173

Cited by 14 publications

(1 citation statement)

References 7 publications

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“…It is advantageous in terms of the ease of paralleling DC electrical bus bars and integration with loads such as actuators. To satisfy the growing demand for high-capacity short-circuit protection, several methods that interrupt direct currents have been extended [3][4][5][6]. Forced current zero (FCZ) is a common method used to interrupt the DC current.…”

Section: Introductionmentioning

confidence: 99%

Direct-Current Forced Interruption and Breaking Performance of Spiral-Type Contacts in Aero Applications

Huo

Jia

et al. 2017

Applied Sciences

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This paper analyses the transient characteristics and breaking performance of direct-current (DC) forced-interruption vacuum interrupters in 270 V power-supply systems. Three stages are identified in forced interruption: the DC-arcing stage, current-commutation stage, and voltage-recovery stage. During the current-commutation stage, the reverse peak-current coefficient k, which is a key design factor, is used to calculate the rate of current at zero-crossing (di/dt). MATLAB/Simulink simulation models are established to obtain the transient characteristics influenced by the forced-commutation branch parameters and the coefficient k. To study the breaking performance of spiral-type contacts, experiments are conducted for different contact materials and arcing times for currents less than 3.5 kA. During the DC-arcing stage, a locally intensive burning arc is observed in the CuW80 contact; however, it is not observed in the CuCr50 contact. On examining the re-ignition interruption results of the CuW80 contact, the intensive burning arc is found to be positioned within a possible re-ignition region. When the arcing time is longer than 1 ms, the intensive burning arc occurs and affects the breaking performance of the spiral-type contacts. If the DC-arcing stage is prolonged, the total arcing energy increases, which leads to a lower breaking capacity.

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Section: Introductionmentioning

confidence: 99%

Direct-Current Forced Interruption and Breaking Performance of Spiral-Type Contacts in Aero Applications

Huo

Jia

et al. 2017

Applied Sciences

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Evolution and interruption characteristics of DC vacuum arc under Halbach transverse magnetic fields

Liu,

Jin,

Chen

et al. 2024

International Journal of Electrical Power & Energy Systems

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Novel DC current interruption technology based on the instability of vacuum arc under composite transverse magnetic fields

Liu

Chen

et al. 2021

IET Generation Trans & Dist

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The objective of this work intends to propose a novel current interruption technology in vacuum for LVDC power systems, based on the instability of vacuum arc under composite transverse magnetic fields (TMFs). The interruption characteristics were experimentally determined in an overdamping C‐L‐R circuit. The experimental results indicated that the DC current of 800 V/500 A could be successfully interrupted within 5 ms by the proposed technology. Moreover, the interruption process could be divided into two stages, the Stable and Unstable stages. In the Stable stage, the arc voltage linearly increased from 20 to 35 V, where the arc current was limited slightly. In the Unstable stage, the arc voltage would rapidly increase and exceed the supply voltage, where the current would be forced to zero. Finally, the double‐break LVDC vacuum switches, no matter in series or parallel, were difficult to improve the interruption capability, because of the asynchronous occurrence of the Unstable stage in series vacuum interrupters and the fast current‐commutation between parallel vacuum interrupters. This technology takes advantages of high interruption capability, short arcing time and low complexity, which is a promising solution to expand the application of vacuum switch to the LVDC power systems.

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DC Vacuum Arc Extinction in a Transverse Axisymmetric Magnetic Field

Cited by 14 publications

References 7 publications

Direct-Current Forced Interruption and Breaking Performance of Spiral-Type Contacts in Aero Applications

Direct-Current Forced Interruption and Breaking Performance of Spiral-Type Contacts in Aero Applications

Evolution and interruption characteristics of DC vacuum arc under Halbach transverse magnetic fields

Novel DC current interruption technology based on the instability of vacuum arc under composite transverse magnetic fields

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