Results 21 to 30 of about 1,560 (287)

Study of the influences of different factors on the charged particles absorbed by the post-arc anode during the post-arc sheath expansion process in vacuum circuit breakers

AIP Advances, 2021
The dielectric recovery process has decisive effects on the current interruption process in vacuum circuit breakers, which has attracted the special attention of researchers.
Yongpeng Mo, Zongqian Shi, Shenli Jia
doaj   +1 more source

Comparison of Conventional and Flash Spark Plasma Sintering of Cu–Cr Pseudo-Alloys: Kinetics, Structure, Properties

Metals, 2021
Spark plasma sintering (SPS) is widely used for the consolidation of different materials. Copper-based pseudo alloys have found a variety of applications including as electrodes in vacuum interrupters of high-voltage electric circuits.
Kirill V. Kuskov, Mohammad Abedi, Dmitry O. Moskovskikh, Illia Serhiienko, Alexander S. Mukasyan   +4 more
doaj   +1 more source

Analysis of the Vacuum Arc Interruption Process in Aviation Intermediate-Frequency Power Supply Systems

Energies, 2017
In this paper, we present our research into the interruption performance of vacuum circuit breakers in aviation intermediate-frequency (360 Hz to 800 Hz) power supply systems. Intermediate-frequency vacuum arc experiments were carried out in interrupters
Yuan Jiang, Jianwen Wu, Mingxuan Chen, Wenlei Huo   +3 more
doaj   +1 more source

Experimental Investigation of the Prestrike Characteristics of a Double-Break Vacuum Circuit Breaker under DC Voltages

Energies, 2020
The prestrike phenomenon in vacuum circuit breakers (VCBs) is interesting but complicated. Previous studies mainly focus on the prestrike phenomenon in single-break VCBs. However, experimental work on prestrike characteristics of double-break VCBs cannot
Yun Geng, Xiaofei Yao, Jinlong Dong, Xue Liu, Yingsan Geng, Zhiyuan Liu, Jing Peng, Ke Wang   +7 more
doaj   +1 more source

Experimental results from a Thomson-coil actuator for a vacuum interrupter in an HVDC breaker

The Journal of Engineering, 2019
Recent developments in high-voltage direct current transmission technology and the plans for multi-terminals motivate research efforts on the fast DC breaker.
Antoine Baudoin, Bence Hátsági, Miguel Álvarez, Lennart Ängquist, Simon Nee, Staffan Norrga, Tomas Modeer   +6 more
doaj   +1 more source

Analysis and Research of the Electric Field in the Vacuum Arc Interrupter of a 31.5 kV Vacuum Circuit Breaker

Energies
The insulation performance of vacuum arc interrupters greatly affects the reliability of vacuum circuit breakers. Optimizing the electric field distribution of a vacuum arc interrupter can improve its insulation performance.
Naming Zhang, Siying Yang, Yuan Feng, Zechen Bai, Shuhong Wang, Shuya Ning   +5 more
doaj   +1 more source

Improving interruption performance of mechanical circuit breakers by controlling pre-current-zero wave shape

High Voltage, 2019
Mechanical circuit breakers (MCBs) are the limiting component for current injection HVDC circuit breakers. Improving their interruption performance reduces requirements for capacitance and inductance needed in the injection circuit and thus space use and
Tim Schultz, Benjamin Hammerich, Benjamin Hammerich, Lorenz Bort, Christian M. Franck, Christian M. Franck   +5 more
doaj   +1 more source

Microstructural Evolution and Vacancy Defect Formation in Mn–Mo–Ni RPV Steel Under Low Cycle Fatigue: Insights From EBSD and PALS

Advanced Engineering Materials, EarlyView.
Low‐cycle fatigue damage in Mn–Mo–Ni reactor pressure vessel steel is examined using a combined electron backscatter diffraction and positron annihilation lifetime spectroscopy approach. The study correlates texture evolution, dislocation substructure development, and vacancy‐type defect formation across uniform, necked, and fracture regions, providing
Apu Sarkar, Dhanadeep Dutta, G. Bharat Reddy   +2 more
wiley   +1 more source

Improved micro-contact resistance model that considers material deformation, electron transport and thin film characteristics [PDF]

, 2009
This paper reports on an improved analytic model forpredicting micro-contact resistance needed for designing microelectro-mechanical systems (MEMS) switches. The originalmodel had two primary considerations: 1) contact materialdeformation (i.e.
Coutu, Ronald A., McBride, John W., Starman, LaVern A.   +2 more
core   +1 more source

Breakdown Charge Dependence of Counter Electrode Material Adhesion and Dielectric Strength After Spark Conditioning in Vacuum [PDF]

, 2023
Spark conditioning is an effective method of increasing the dielectric strength in vacuum. In this article, we discuss the breakdown (BD) charge dependence of counter electrode material adhesion and dielectric strength after spark conditioning.
Fukuda, Hideaki, Hayakawa, Naoki, Kita, Naoki, Kojima, Hiroki, Nagatake, Kazuhiro, Yamamura, Kenta   +5 more
core   +1 more source