Results 1 to 10 of about 57,123 (158)

Simulation and Verification of Effect of Arc Duration on Arc Temperature Based on COMSOL

Machines, 2023
The pantograph–catenary arc of urban rail has the characteristic of high temperature, which directly acts on the surface of the pantograph–catenary system, will seriously ablate pantograph and contact line, and affect the flow of the pantograph–catenary ...
Xiaoying Yu, Mengjie Song, Ze Wang
doaj   +4 more sources

A Non-Invasive Circuit Breaker Arc Duration Measurement Method with Improved Robustness Based on Vibration–Sound Fusion and Convolutional Neural Network

Energies, 2023
Previous studies have shown that the contact wear estimation of circuit breakers can be based on the accumulative arc duration. However, one problem that remains unresolved is how to reliably measure the arc duration.
Ning Guo, Kevin Whitmore, Morris Cohen, Raheem Beyah, Lukas Graber   +4 more
doaj   +3 more sources

Quantitative influence of multiple factors on arc duration of high power density DC relays based on back-propagation neural network and local feature importance analysis

International Journal of Electrical Power & Energy Systems
Arc duration is one of the key factors determining the arc-extinguishing performance and contact erosion damage of high power density direct current (DC) relays. Since the arc duration is affected by multiple factors, including power, transverse magnetic
Dandan Zhang, Guobin Hou, Zhenbiao Li, Zhiyu Wan, Kexin Shi   +4 more
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Onset timing and duration of augmented renal clearance in a mixed intensive care unit

Journal of Intensive Care, 2023
Background Augmented renal clearance (ARC) is associated with lower blood plasma concentrations of renally excreted drugs; however, its time course is unknown.
Ryusei Mikami, Mineji Hayakawa, Shungo Imai, Mitsuru Sugawara, Yoh Takekuma   +4 more
doaj   +1 more source

Arc erosion resistance of hybrid copper matrix composites reinforced with CNTs and micro-TiB2 particles

Journal of Materials Research and Technology, 2021
Synergistic strengthening is increasingly explored for developing high-performance copper matrix composite. In this work, the hybrid copper matrix composites reinforced with carbon nanotubes (CNTs) and micro- TiB2 particles（（CNTs-TiB2）/Cu composites）were
Xiuhua Guo, Yubo Yang, Kexing Song, Li Shaolin, Feng Jiang, Xu Wang   +5 more
doaj   +1 more source

Research on Vacuum Arc Commutation Characteristics of a Natural-Commutate Hybrid DC Circuit Breaker

Energies, 2020
Vacuum arc commutation is an important process in natural-commutate hybrid direct current (DC) circuit breaker (NHCB) interruption, as the duration of vacuum arc commutation will directly affect the arcing time and interrupting time of NHCB.
Dequan Wang, Minfu Liao, Rufan Wang, Tenghui Li, Jun Qiu, Jinjin Li, Xiongying Duan, Jiyan Zou   +7 more
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Vacuum arc characteristics of an AMF–TMF composite contact with fixed AMF contacts under different opening velocities

AIP Advances, 2022
The objective of this paper is to determine the vacuum arc characteristics of a novel axial magnetic field (AMF)–transverse magnetic field (TMF) composite contact under different opening velocities.
Zihan Wang, Hui Ma, Yuanzhao Li, Haomin Li, Jianhua Wang, Yingsan Geng, Zhiyuan Liu   +6 more
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Spatiotemporally resolved characteristics of arc plasma in non-thermal multi-arc generator at atmospheric pressure

AIP Advances, 2021
The spatiotemporally resolved characteristics of arc plasma in a non-thermal multi-arc generator with three high-voltage electrodes and a common grounded one were investigated by means of arc current signal, discharge image signal, and image analysis ...
Y. J. Huang, Q. F. Lin
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Enhanced arc erosion resistance via constructing W particle network structure in cold sprayed CuCrZr–W coating: Implication for electromagnetic launching system

Journal of Materials Research and Technology, 2023
In electromagnetic launching systems, arc erosion of rail material, such as Al2O3 dispersion-strengthened copper (ODS-Cu), remains a critical unresolved issue.
Wan-Li Song, Zhe Wang, Ying-Chun Xie, Yan-Wei Wen, Jie Pan, Jun-Yong Lu, Cheng Zhang, Lin Liu   +7 more
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Break-Arc Erosion and Material Transfer Behavior of Pt–Ir and Pt–Ir–Y Electrical Contact Materials under Different Currents

Metals, 2023
In order to explore the influence of rare earth element Y on the electrical contact properties of Pt–Ir alloys, Pt–10Ir–Y and Pt–25Ir–Y were prepared via arc melting combined with thermal processing, and electrical contact experiments were carried out ...
Saibei Wang, Song Wang, Yong Sun, Song Chen, Aikun Li, Jieqiong Hu, Mingjun Peng, Ming Xie   +7 more
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