Results 1 to 10 of about 87,752 (152)

Comparison of the Interrupting Capability of Gas Circuit Breaker According to SF₆, g³, and CO₂/O₂ Mixture

Energies, 2020
In the study, an interrupting performance test on the 145 kV gas circuit breaker is performed according to three different gases: SF6, g3 (5% NovecTM4710 with 95% CO2), and CO2(70%)/O2(30%) gases. Thanks to research advancements, it is confirmed that CO2
Woo-Young Lee, Jang-Un Jun, Ho-Seok Oh, Jun-Kyu Park, Yeon-Ho Oh, Ki-Dong Song, Hyun-Jae Jang   +6 more
doaj   +2 more sources

Study on Flow and Heat Transfer Characteristics of Battery Thermal Management System with Supercritical CO₂ for Energy Storage Stations

Energies
Energy storage stations (ESSs) need to be charged and discharged frequently, causing the battery thermal management system (BTMS) to face a great challenge as batteries generate a large amount of heat with a high discharge rate.
Ya Wang, Fengbin Li, Feng Cao, Shaozhong Liang, Jian Fu   +4 more
doaj   +2 more sources

Combined Effect of the Parameters of Vacuum Interrupter and L-C Circuit Upon Arc Re-Ignition in HVDC Circuit Breakers

IEEE Access
The new horizons for HVDC systems and their applications has intensified the research in HVDC protection systems. The HVDC circuit breakers (CB) has been the center of the protection systems with vacuum interrupters (VIs) showcasing a great potential for
Tamer Eliyan, Ali Saeed Almuflih, Z. M. S. Elbarbary, Fady Wadie   +3 more
doaj   +2 more sources

A Dual Enhancement Switching Technology for Vacuum Circuit Breakers in Various AC-Based Operational Environments

IEEE Access
Vacuum circuit breakers (VCBs) have gained the attention of the medium voltage community for their involvement in various applications. However, the problem of arc-reignition is still under investigation with R-C snubber circuits considered as the most ...
Tamer Eliyan, Saad F. Al-Gahtani, Z. M. S. Elbarbary, Fady Wadie   +3 more
doaj   +2 more sources

Novel Characterization of Si- and SiC-Based PWM Inverter Bearing Currents Using Probability Density Functions

Energies, 2022
The high frequency PWM voltage pulses from a two-level six-switch inverter produce a common-mode voltage in an electric machine’s windings, a fraction of which appears on the machine shaft due to electrostatic (capacitive) coupling.
Ryan Collin, Alex Yokochi, Annette von Jouanne   +2 more
doaj   +1 more source

Study of Radiation-Chemical Structuring of Compositions Based on Epoxy Oligomers

East European Journal of Physics, 2020
The processes of radiation-chemical structuring of modified epoxy acrylic compositions were studied depending on the nature of epoxy oligomers and modifiers.
Lidiya F. Podhornaya, Vyacheslav L. Avramenko, Oleh H. Karandashov   +2 more
doaj   +1 more source

Trapping atoms using nanoscale quantum vacuum forces [PDF]

, 2013
Quantum vacuum forces dictate the interaction between individual atoms and dielectric surfaces at nanoscale distances. For example, their large strengths typically overwhelm externally applied forces, which makes it challenging to controllably interface ...
Chang, D. E., Kimble, H. J., Sinha, K., Taylor, J. M.   +3 more
core   +6 more sources

Internal charge behaviour of nanocomposites [PDF]

, 2004
The incorporation of 23 nm titanium dioxide nanoparticles into an epoxy matrix to form a nanocomposite structure is described. It is shown that the use of nanometric particles results in a substantial change in the behaviour of the composite, which can ...
Alison J, Artbauer J, Bambery K R Fleming R J, Chapman D L, Crine J-P, Dissado L A, Dissado L A, Frechette M F, Griseri V, Henk P O, Henk P O Henriksen M Holbell J T Iqbal J, J Keith Nelson, John C Fothergill, Jonscher A K, Kawamoto A, Lewis T J, Mason J H, Nelson J K, Nelson J K Fothergill J C Dissado L A Peasgood W, Sabuni H, van Turnhout J   +20 more
core   +1 more source

Study on the Breakdown Characteristics of Multiple-Reignition Secondary Arcs on EHV/UHV Transmission Lines

IEEE Transactions on Plasma Science, 2023
A long-gap ac arc with a length of more than 10 m (secondary arc) is normally generated at the short-circuit arc channel after a single-phase-to-ground fault. In previous studies, arc breakdowns of secondary arcs have mainly been considered as electrical
Runchang Li, Hongshun Liu, Xiaoxuan Lou, Ping Song, Weihong Hou, Shiqiang Dai, Yuchao Shi, Gongyu Jin, W. H. Siew, Qingmin Li   +9 more
semanticscholar   +1 more source

Holographic Plasmon Relaxation with and without Broken Translations [PDF]

, 2019
We study the dynamics and the relaxation of bulk plasmons in strongly coupled and quantum critical systems using the holographic framework. We analyze the dispersion relation of the plasmonic modes in detail for an illustrative class of holographic ...
Alba, Amadeo Jimenez, Baggioli, Matteo, Gran, Ulf, Tornsö, Marcus, Zingg, Tobias   +4 more
core   +3 more sources