Results 51 to 60 of about 45,331 (307)

AC/DC Superimposed Breakdown Characteristics and Electric Field Simulation Analysis of Oil-Paper Insulation in Converter Transformers

open access: yesEAI Endorsed Transactions on Energy Web
This study investigates the electric field distribution and breakdown characteristics of oil-paper insulation in a 500 kV converter transformer under AC/DC superimposed voltages. The electric field distribution within the winding end insulation structure
Xiaofan Huang   +3 more
doaj   +1 more source

3D Concentric Electrodes-Based Alternating Current Electrohydrodynamics: Design, Simulation, Fabrication, and Potential Applications for Bioassays

open access: yesBiosensors, 2022
Two-dimensional concentric asymmetric microelectrodes play a crucial role in developing sensitive and specific biological assays using fluid micromixing generated by alternating current electrohydrodynamics (ac-EHD).
Raphaela K. S. Silva   +5 more
doaj   +1 more source

Influence of low electric field parts of electric field–current density curves of superconductors on their ac loss characteristics [PDF]

open access: yes, 2023
35th International Symposium on Superconductivity (ISS 2022) 29/11/2022 - 01/12/2022 Nagoya, JapanWe performed numerical electromagnetic field analyses to investigate the influence of the low electric field parts of the electric field (E)-current density
Sogabe, Y, Amemiya, N
core   +1 more source

Influence to the Structure and Dynamics of Hydrated Ca2+ and Water Molecules in CaCl2 Aqueous Solution Caused by External AC Electric Field: A Mechanism Study by Molecular Dynamics Simulation

open access: yesInternational Journal of Electrochemical Science, 2012
In the present study systematic long time (1112-2500 ns) non-equilibrium molecular dynamics (MD) simulation have been carried out at the first time to study structural and dynamical properties of hydrated Ca2+ and water molecules in CaCl2 aqueous ...
Yong Han, Yongping Zhao
doaj   +1 more source

Scattering of Metal Colloids by a Circular Post under Electric Fields

open access: yesMicromachines, 2022
We consider the scattering of metal colloids in aqueous solutions by an insulating circular post under the action of an AC electric field. We analyze the effects on the particle of several forces of electrical origin: the repulsion between the induced ...
José Eladio Flores-Mena   +2 more
doaj   +1 more source

AC Electric-Field-Induced Fluid Flow in Microelectrodes [PDF]

open access: yesJournal of Colloid and Interface Science, 1999
During the AC electrokinetic manipulation of particles in suspension on microelectrode structures, strong frequency-dependent fluid flow is observed. The fluid movement is predominant at frequencies below the reciprocal charge relaxation time, with a reproducible pattern occurring close to and across the electrode surface.
Ramos, Antonio   +3 more
openaire   +3 more sources

Onset of Nonlinear Electroosmotic Flow under an AC Electric Field

open access: yesAnalytical Chemistry, 2022
Nonlinearity of electroosmotic flows (EOFs) is ubiquitous and plays a crucial role in the mass and energy transfer in ion transport, specimen mixing, electrochemistry reaction, and electric energy storage and utilizing. When and how the transition from a linear regime to a nonlinear one is essential for understanding, prohibiting or utilizing nonlinear
Zhongyan Hu   +10 more
openaire   +3 more sources

Low-frequency electric fields at smartphone surface

open access: yesAIP Advances, 2023
Mobile phones, tablets, and other devices with capacitive touchscreens are ubiquitous in modern society. Consequently, the battery health of such devices along with the potential public health impacts of their typical use is of high importance.
John Voccio   +6 more
doaj   +1 more source

Effect of Electric-Field Components on the Flashover Characteristics of Oil-Paper Insulation Under Combined AC-DC Voltage

open access: yesIEEE Access, 2023
Flashover characteristics are closely related to the electrical field distribution on the surface of oil-paper insulation. In this study, the effects of electrical field and DC voltage components on the creepage flashover characteristics of oil-paper ...
Jin Fubao, Zhou Yuanxiang
doaj   +1 more source

Space charge behaviours in polyethylene under combined AC and DC electric fields

open access: yes, 2014
Polyethylene has been one of the widely studied polymeric insulation materials. One of the major issues related to polymeric materials is the easy formation of space charge which may cause electric field enhancement. In this paper, a numerical simulation
C. Zhou   +3 more
core   +1 more source

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