Results 11 to 20 of about 1,062,243 (292)

Determination of Dielectric Losses in a Power Transformer

open access: yesEnergies, 2022
The article presents a method of determining dielectric losses that occur in insulating materials in a power transformer. These losses depend mainly on the electric field stress, pulsation, dielectric loss coefficient, and electrical permittivity of ...
Zbigniew Nadolny
doaj   +4 more sources

Dielectric constant and losses in a magnetic field in RexMn1-xS solid solutions (Re = Gd, Yb) [PDF]

open access: yesE3S Web of Conferences
Polycrystalline samples GdxMn1-xS and YbxMn1-xS with a concentration x = 0.2, near the ions percolation concentration through the face-centered cubic lattice, are studied in order to determine fluctuations in the valence of the ytterbium ion on ...
Kharkov A. M.   +4 more
doaj   +2 more sources

Dielectric Losses of Doped Colored Crystals

open access: yesThe Journal of Chemical Physics, 1957
The dielectric losses of KBr single crystals doped with BaBr2 at different concentrations, both uncolored and additively colored, have been measured. A maximum in the dielectric loss versus frequency curve in the additively colored crystal was observed ...
Jacobs, Gilbert, G. Jacobs
core   +3 more sources

Automated control system to monitor dielectric losses in polymers

open access: yesMATEC Web of Conferences, 2018
The basic property of the processed polymers when it comes to high-frequency heat treatment is their dielectric losses. The purpose of the present study is elaboration of automated control system to monitor dielectric losses in polymers during heating ...
Butorin Denis
doaj   +2 more sources

Dielectric resonator bandstop filters [PDF]

open access: yes, 2011
Dielectric resonators have been widely employed in wireless and satellite communication systems due to their inherently large Q allowing them to fashion low loss and narrow bandwidth filters.
Chan, Richard Kayip
core   +5 more sources

Synthesis and characterizations of (Ba1-xCax)Ti4O9, 0 ≤ x ≤ 0.9 ceramics

open access: yesJournal of Materials Research and Technology, 2021
Manufacturing of energy storage devices with good efficiency and fewer losses has been a distinct topic. A material with good dielectric properties and fewer energy losses is the basic demand of the electronic industry.
Asad Ali   +7 more
doaj   +1 more source

Implications of Nonlinear Material Parameters on the Dielectric Loss under Harmonic Distorted Voltages

open access: yesEnergies, 2021
The increasing number of power electronic devices in electrical grids may lead to harmonic distorted voltages, which are considered to be possible causes of component failures. In this study, the dielectric losses of epoxy polymer and functionally filled
Thomas Linde   +5 more
doaj   +1 more source

Effective parameters of dielectric absorption of polymeric insulation with semiconductor coatings of power high voltage cables

open access: yesElectrical engineering & Electromechanics, 2022
Introduction. The presence of semiconductor shields leads to additional dielectric losses compared to polymer insulation without shields. Losses in cables in the presence of semiconductor coatings depend on the dielectric permittivity and resistivity of ...
G. V. Bezprozvannych, M. V. Grynyshyna
doaj   +1 more source

Unique-Solution Single-Sample Complex Dielectric Characterization Through Linear Phase Approximation

open access: yesIEEE Open Journal of Antennas and Propagation, 2022
This paper presents a transmission-only (TO) approach that solves the long-standing problem of transmission phase ambiguity. The approach considers a linear frequency-dependent phase approximation to derive the phase mode value analytically and uniquely ...
Constant M. A. Niamien
doaj   +1 more source

Studying the Effect of Aluminum Powder Addition on Dielectric Behavior of Polyester Composite Materials [PDF]

open access: yesEngineering and Technology Journal, 2013
The effect of both weight fraction of aluminium and frequency on dielectric properties of Al- powder reinforced polyester composite materials were investigated.
Nirvana A. Abd Alameer   +1 more
doaj   +1 more source

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