Results 11 to 20 of about 5,188,114 (289)

Temperature effect on space charge dynamics in XLPE insulation [PDF]

open access: yes, 2007
This paper reports on space charge evolution in crosslinked polyethylene (XLPE) planar samples approximately 1.20 mm thick subjected to electric stress level of 30 kVdc/mm under four temperature 25 oC, 50 oC, 70 oC and 90 oC for 24 hours.
Chong, Y L, Chen, G, Ho, Y F F
core   +2 more sources

Charged spaces

open access: yesForum Mathematicum, 2013
Abstract Let C be a model category with an initial object ⌀ ${\varnothing }$ and functorial factorizations. Let
Klein, John R., Peter, John W.
openaire   +2 more sources

Modified Charge Transport Model Under High-Frequency Unipolar Square Wave Voltage

open access: yesFrontiers in Materials, 2022
As the main insulation material of the power electronic transformer (PET), polyimide (PI) is easy to accumulate space charge under the continuous high-frequency pulse voltage, which will threaten the operation of PET and cause electric field distortion ...
Jianxiang Xie   +4 more
doaj   +1 more source

Dimensionality of charge space [PDF]

open access: yesIl Nuovo Cimento, 1956
There is no dearth of experimental evidence to indicate that real space-time is a four-dimensional manifold. At present there is much less certainty in attributing dimensions to the charge space of heavy particles, and it may be worth while to review various hypotheses and the meager experimental evidence in this regard. The Clebsch-Gordon coefficients
openaire   +2 more sources

Space Charge in LLDPE Loaded with Nanoparticles [PDF]

open access: yes, 2007
Fillers are widely used in insulation systems to achieve specific electrical, mechanical and thermal properties. Recently, polymer nanocomposites have attracted significant attention as a means of improving their performance and widening their utility ...
Steven, G, Zhang, C, Chen, G
core   +2 more sources

Simulation of Influence of DC Pre-Stress on Space-Charge Characteristics of Cross-Linked Polyethylene in Inhomogeneous Field

open access: yesIEEE Access, 2020
Space charge is one of the main causes of electrical tree initiation in high-voltage cable insulation. To investigate the influence of DC pre-stress on the space-charge distribution of cross-linked polyethylene (XLPE), a two-dimensional needle-plate ...
Hechen Liu   +5 more
doaj   +1 more source

Longitudinal phase space tomography with space charge

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2000
Tomography is now a very broad topic with a wealth of algorithms for the reconstruction of both qualitative and quantitative images. In an extension in the domain of particle accelerators, one of the simplest algorithms has been modified to take into ...
S. Hancock, M. Lindroos, S. Koscielniak
doaj   +1 more source

Interfacial Characteristics of Space Charge in Multi-layer LDPE [PDF]

open access: yes, 2008
This paper reports on the investigation into space charge characteristics at interfaces of multi-layer polymeric materials. Planar low density polyethylene (LDPE) samples were used in this study. DC voltage up-to 10 kV was applied to the sample and space
Z. Xu   +3 more
core   +2 more sources

Head-tail instability and Landau damping in bunches with space charge

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2010
Head-tail modes in bunches with space charge are studied using particle tracking simulations. The eigenfrequencies and eigenfunctions of transverse coherent oscillations in a Gaussian bunch are determined and compared with theories. A model for an airbag
V. Kornilov, O. Boine-Frankenheim
doaj   +1 more source

Impact of accelerated aging of epoxy‐Ni nanocomposites on space charge variation adopting pulsed electro acoustic technique

open access: yesSPE Polymers, 2020
Epoxy‐Ni nanocomposites of different weight percentages are subjected to accelerated aging by water aging, thermal aging and UV irradiation to understand the influence of aging conditions on their space charge behavior.
Myneni Sukesh Babu   +3 more
doaj   +1 more source

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