Results 91 to 100 of about 474,421 (340)

Effects of arcing due to spacecraft charging on spacecraft survival [PDF]

A quantitative assessment of the hazard associated with spacecraft charging and arcing on spacecraft systems is presented. A literature survey on arc discharge thresholds and characteristics was done and gaps in the data and requirements for additional ...
Ellen, J. M., Jr., Inouye, G. T., Rosen, A., Sanders, N. L.   +3 more
core   +1 more source

Time domain analysis of switching transient fields in high voltage substations [PDF]

, 2009
Switching operations of circuit breakers and disconnect switches generate transient currents propagating along the substation busbars. At the moment of switching, the busbars temporarily acts as antennae radiating transient electromagnetic fields within ...
Judd, M.D., Musa, B.U., Siew, W.H.
core  

NanoMOF‐Based Multilevel Anti‐Counterfeiting by a Combination of Visible and Invisible Photoluminescence and Conductivity

Advanced Functional Materials, EarlyView.
This study presents novel anti‐counterfeiting tags with multilevel security features that utilize additional disguise features. They combine luminescent nanosized Ln‐MOFs with conductive polymers to multifunctional mixed‐matrix membranes and powder composites. The materials exhibit visible/NIR emission and matrix‐based conductivity even as black bodies.
Moritz Maxeiner, Ruben Maile, Murat Cuvalli, Andreas Wolf, Ayisha Komal, Robert Oestreich, Christoph Janiak, Karl Mandel, Alexander Knebel, Klaus Müller‐Buschbaum   +9 more
wiley   +1 more source

Analysis of the Influence of Arc Contact Ablation and Arcing Time on the Gas Flow Characteristics of SF6 Circuit Breakers

International Transactions on Electrical Energy Systems
High-current interruptions aggravate arc contact ablation, and arcing time strongly influences the gas-blast capability of self-energy SF6 circuit breakers.
Xue Zhang, Bin Xiang, Shulei Zhao, Chuxin Wang, Yixuan Li, Zhiyuan Liu   +5 more
doaj   +1 more source

Analysis of Arc Re-Ignition in Vacuum Interrupter-Based HVdc Circuit Breakers

IEEE Access
The protection of HVdc systems has long been challenged by the absence of natural current zero-crossing, typically addressed using L-C branches. However, the phenomenon of multiple arc reignitions in vacuum interrupter (VI) based HVdc circuit breakers ...
Tamer Eliyan, Ali Saeed Almuflih, Z. M. S. Elbarbary, Fady Wadie   +3 more
doaj   +1 more source

Device for preventing high voltage arcing in electron beam welding Patent [PDF]

Development of device to prevent high voltage arcing in electron beam ...
Hanchey, K. K., Kubik, J. S., Mahan, J. C.   +2 more
core   +1 more source

Basic suppression techniques are evaluated [PDF]

, 1966
Investigation of standard suppression methods facilitates switching of inductively loaded circuits which causes interference in adjacent electronic equipment.
Dawirs, H. N.
core   +1 more source

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

Advanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng, Qian Yao, Yanan Sun, Hongyu Lv, Zhongchao Bai, Guoliang Zhang, Nana Wang, Jian Yang   +7 more
wiley   +1 more source

Arcing High Impedance Fault Detection Using Real Coded Genetic Algorithm

, 2007
Safety and reliability are two of the most important aspects of electric power supply systems. Sensitivity and robustness to detect and isolate faults can influence the safety and reliability of such systems.
Al-Othman, A.K., Sykulski, J.K., Zamanan, N.   +2 more
core  

Comment: Boosting Algorithms: Regularization, Prediction and Model Fitting

, 2008
The authors are doing the readers of Statistical Science a true service with a well-written and up-to-date overview of boosting that originated with the seminal algorithms of Freund and Schapire. Equally, we are grateful for high-level software that will
Buja, Andreas, Mease, David, Wyner, Abraham J.   +2 more
core   +1 more source