Results 41 to 50 of about 10,771 (260)

Effect of Interface Defects on the Electric–Thermal–Stress Coupling Field Distribution of Cable Accessory Insulation

Energies
The combined insulation interface of a high-voltage cable and accessories is the weakest part of a cable system. In this paper, the parameters of the dielectric constant, thermal conductivity, and elastic modulus of cross-linked polyethylene (XLPE) and ...
Xu Lu, Ran Hu, Kongying Guo, Rui Lan, Jie Tian, Yanhui Wei, Guochang Li   +6 more
doaj   +1 more source

Computer Vision for DC Partial Discharge Diagnostics in Traction Battery Systems

World Electric Vehicle Journal, 2023
The tendency towards thin insulation layers in traction battery systems presents new challenges regarding insulation quality and service life. Phase-resolved DC partial discharge diagnostics can help to identify defects.
Ronan Sangouard, Ivo Freudenberg, Maximilian Kertel   +2 more
doaj   +1 more source

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source

Partial Discharge Characteristics of Typical Defects in Oil-Paper Insulation Based on Photon Detection Technology

Energies
As a key equipment in the power system, the insulation state of oil-immersed transformer is directly related to the safe and stable operation of the power grid.
Zhengyan Zhang, Yong Yi, Ji Qi, Qian Wang, Weiqi Qin, Xianhao Fan, Chuanyang Li   +6 more
doaj   +1 more source

A Study on the Propagation Characteristics of Partial Discharge in Cable Joints Based on the FDTD Method

IEEE Access, 2020
Partial discharge (PD) is the main cause of cable insulation deterioration. It is of great theoretical significance and practical value to carry out PD research on high voltage (HV) cable joints for fault detection and operational status evaluation.
Yifan Zhou, Yongliang Wang, Wei Wang
doaj   +1 more source

Control of Polarization and Polar Helicity in BiFeO3 by Epitaxial Strain and Interfacial Chemistry

Advanced Functional Materials, EarlyView.
In BiFeO3 thin films, the interplay of interfacial chemistry, electrostatics, and epitaxial strain is engineered to stabilize homohelicity in polarization textures at the domain scale. The synergistic use of a Bi2O2‐terminated Aurivillius buffer layer and a highly anisotropic compressive epitaxial strain offers new routes to control the polar‐texture ...
Elzbieta Gradauskaite, Lilia Huynh, Natascha Gray, Quintin N. Meier, Marta D. Rossell, Morgan Trassin   +5 more
wiley   +1 more source

A novel adversarial transfer learning in deep convolutional neural network for intelligent diagnosis of gas‐insulated switchgear insulation defect

IET Generation, Transmission & Distribution, 2021
Recently, numerous data‐driven fault diagnosis methods have been developed, and the tasks involving the same distribution of training and test data have been well solved.
Yanxin Wang, Jing Yan, Qianzhen Jing, Zhenkang Qi, Jianhua Wang, Yingsan Geng   +5 more
doaj   +1 more source

Parameters that influence the partial discharges occurrence in cavity defect within electrical cable insulation

Diagnostyka, 2023
The electrical cable reliability is largely linked to the state of its insulation, which can be threatened by the partial discharges (PDs) activity. This phenomenon is localized in defects created within insulation during the manufacture process and the ...
Abdelkader Elagoun, Tahar Seghier
doaj   +1 more source

Intermediate Resistive State in Wafer‐Scale Vertical MoS2 Memristors Through Lateral Silver Filament Growth for Artificial Synapse Applications

Advanced Functional Materials, EarlyView.
In MOCVD MoS2 memristors, a current compliance‐regulated Ag filament mechanism is revealed. The filament ruptures spontaneously during volatile switching, while subsequent growth proceeds vertically through the MoS2 layers and then laterally along the van der Waals gaps during nonvolatile switching.
Yuan Fa, Milan Buttberg, Ke Ran, Rana Walied Ahmad, Dennis Braun, Lukas Völkel, Jimin Lee, Sofía Cruces, Bart Macco, Bárbara Canto, Holger Lerch, Thorsten Wahlbrink, Holger Kalisch, Michael Heuken, Andrei Vescan, Joachim Mayer, Zhenxing Wang, Ilia Valov, Stephan Menzel, Max C. Lemme   +19 more
wiley   +1 more source

Degradation Degree Classification of GIS Insulation Surface Defects Based on Mean Value Normalized by Work Function

Shanghai Jiaotong Daxue xuebao
Insulation surface defects are common defects inside gas insulated switchgear (GIS). The ultra-high frequency (UHF) method is the most widely used method to detect GIS insulation defects in operation.
ZHANG Zhaoqi, SONG Hui, WANG Zonglin, SHENG Gehao, JIANG Xiuchen
doaj   +1 more source