Results 11 to 20 of about 2,305,687 (346)

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

Frontiers 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, Shen Yan, Mingchen Shi, Yiyi Zhang, Jiefeng Liu   +4 more
doaj   +1 more source

Influence of thermal treatment and residues on space charge accumulation in XLPE for DC power cable application [PDF]

, 2007
Effects of cross-linking by-products (residues) of polyethylene on space charge accumulation and decay are investigated in the paper using the pulsed electro-acoustic technique.
Chen, G., Dissado, A., Fothergill, J., Fu, M.   +3 more
core   +1 more source

Charged spaces

Forum 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

Charge distribution and electroluminescence in cross-linked polyethylene under dc field [PDF]

, 2001
The intent of this paper is to cross-correlate the information obtained by space charge distribution analysis and electroluminescence (EL) detection in cross-linked polyethylene samples submitted to dc fields, with the objective to make a link between ...
A See, Alison J M, Augé J L, Bert C, C Laurent, Dissado L, F Palmieri, Fothergill J C, Fothergill J C, Fukuma M, G C Montanari, G Teyssedre, Ho Y F F, J C Fothergill, Kitani I, L A Dissado, Laurent C, Li Y, Mary D, Montanari G C, Suzuoki Y, Zeller H R, Zeller H R   +22 more
core   +1 more source

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

IEEE 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, Xiaobin Xu, Yun-Peng Liu, Shaoxin Meng, Zhanpeng Guo, Mingjia Zhang   +5 more
doaj   +1 more source

Effect of DC Pre-stress on Space Charge and Electrical Tree in XLPE with Needle-Plate Electrodes

Zhongguo dianli, 2021
Space charge is one of the main factors that affect the electrical tree characteristics of HVDC cable insulation. Based on the bipolar charge transport model, this paper simulates the space charge distribution characteristics of the two-dimensional ...
Xiaobin XU, Aijing LIU, Yanjie LE, Hechen LIU, Zhanpeng GUO, Yunpeng LIU   +5 more
doaj   +1 more source

Space Charge Modulated Electrical Breakdown [PDF]

Scientific Reports, 2016
AbstractElectrical breakdown is one of the most important physical phenomena in electrical and electronic engineering. Since the early 20thcentury, many theories and models of electrical breakdown have been proposed, but the origin of one key issue, that the explanation for dc breakdown strength being twice or higher than ac breakdown strength in ...
Li, Shengtao, Zhu, Yuanwei, Min, Daomin, Chen, George   +3 more
openaire   +4 more sources

Longitudinal phase space tomography with space charge

Physical 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

Identification and characterization of high order incoherent space charge driven structure resonances in the CERN Proton Synchrotron

, 2020
Space charge is typically one of the performance limitations for the operation of high intensity and high brightness beams in circular accelerators.
Asvesta, Foteini, Bartosik, Hannes, Gilardoni, Simone, Huschauer, Alexander, Machida, Shinji, Papaphilippou, Yannis, Wasef, Raymond   +6 more
core   +1 more source

Space Charge Measurement and Modelling in Cross-Linked Polyethylene

Energies, 2020
Cross-linked polyethylene, commercially known as XLPE, is widely used as an insulating material in high voltage cables. However, space charge accumulation under the DC field is one of the most challenging problems in the further development of XLPE ...
Yunpeng Zhan, George Chen, Miao Hao, Lu Pu, Xuefeng Zhao, Sen Wang, Jian Liu   +6 more
doaj   +1 more source