DC Current Interruption Based on Vacuum Arc Impacted by Ultra-Fast Transverse Magnetic Field

Abstract

In this paper, the effect of an external ultrafast transverse magnetic field (UFTMF) on a vacuum arc in the diffused mode has been studied. According to the results of studies, a novel approach for making a zero-crossing in a DC arc current has been presented. Plasma voltage fluctuations of the vacuum arc, which are caused by UFTMF, have been investigated via finite element simulation and two-fluid description of plasma physics. By making an appropriate UFTMF through an external circuit, the arc current can be commuted successfully from the vacuum interrupter (VI) to a parallel capacitor and charge it up. In this way, a zero-crossing in the arc current can be achieved, and the current will be interrupted by the VI. Simulation results, which are supporting physical backgrounds for this analysis, have been presented in this paper while technological issues for industrial implementation of this concept have been discussed in detail.

Analysis of Short-Circuit and Dielectric Recovery Characteristics of Molded Case Circuit Breaker according to External Environment

“…This force disturbs or helps the arc move toward the splitter plate. Therefore, it is necessary to analyze the movement of the arc according to the external magnetic field [16]. If the temperature around the circuit breaker changes, it affects the cooling and emission of hot gas inside the arc extinguishment chamber, so analysis is needed.…”

Application of an Improved Mayr-Type Arc Model in Pyro-Breakers Utilized in Superconducting Fusion Facilities

“…Determining the values of the parameters of the arc model is considered to be the most difficult problem in the application of the black-box arc model. Furthermore, most of the existing arc model research has focused on arcs discharged in a vacuum or in open air [26][27][28]. The arc in the pyro-breaker presented here, however, is discharged in deionized water.…”

Dynamic Characteristics of Transverse-Magnetic-Field Induced Arc for Plasma-Jet-Triggered Protective Gas Switch in Hybrid UHVDC System

“…The control of the rotating arc by the magnetic field is one of the most effective arc controlling technologies. To withstand high current flowing, the electrode is commonly designed with a TMF-based structure, axial magnetic field (AMF)-based structure and hybrid-type electrode that achieves a combination of the impacts of TMF and AMF [2][3][4]. In the case of TMF arc control, the plate of the electrode is designed with slots so that the self-induced TMF is perpendicular to the arc column.…”