Results 31 to 40 of about 65,573 (269)
High Voltage, 2020 High voltage power cables play a critical role in global electricity transmission and distribution. The currently used power cables cannot fulfil the green and sustainable requirement of modern society because of the thermoset nature of cable insulation ...
Xingyi Huang +6 more
doaj +1 more source
IET Renewable Power Generation, 2021 Virtual synchronous generator (VSG) has been widely studied owing to its inertia support to the grid. However, the stability of VSG is not analysed accurately for actual applications in previous studies that overlook voltage and current inner loops of ...
Yang Peng +5 more
doaj +1 more source
In‐situ observation of electrical tree evolution in epoxy dielectrics with internal cracks
High Voltage, 2021 Gas‐filled internal crack might appear in thermoset materials like epoxy resin during the equipment manufacturing, which would become a vulnerable local region to initiate the electrical tree, thus prone to cause insulation failure. The withstand voltage
Zehua Wu +7 more
doaj +1 more source
Superconductor–insulator transitions and insulators with localized pairs [PDF]
Physics-Uspekhi, 1998 Two experiments are described which are related to the problem of localized Cooper pairs. Magnetic-field-tuned superconductor-insulator transition was studied in amorphous In--O films with onset of the superconducting transition in zero field near 2 K. Experiments performed in the temperature range T>0.3 K indicate that at the critical field, B=B_c,
openaire +2 more sources
A thermal network model considering thermal coupling effect and TIM degradation in IGBT modules
Energy Reports, 2023 Thermal interface materials (TIMs), as important materials for heat dissipation of insulated gate bipolar transistor (IGBT) modules, degrade under long-term thermal cycling, resulting in elevated junction temperatures and threatening the safe operation ...
Xiaotong Zhang +5 more
doaj +1 more source
International Transactions on Electrical Energy SystemsHigh-current interruptions aggravate arc contact ablation, and arcing time strongly influences the gas-blast capability of self-energy SF6 circuit breakers.
Xue Zhang +5 more
doaj +1 more source
IET Power Electronics, 2023 In the industry, there is still a substantial amount of old in‐service equipment without a fault warning function. To provide an effective fault monitoring scheme for the in‐service motor drive system inside the equipment, this paper proposes a fault ...
Zhichao Chen +4 more
doaj +1 more source
Recurrent Hypothermia and Autonomic Dysfunction Secondary to Shapiro Syndrome
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT A 44‐year‐old man presented with recurrent hypothermia, diaphoresis and hypertension. Extensive investigation for infectious, inflammatory, metabolic and endocrine aetiologies was negative. MR scan of the brain demonstrated no lesions but revealed callosal dysgenesis, consistent with Shapiro syndrome.
Naveen Kumar +3 more
wiley +1 more source
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objective We aim to comprehensively analyze how regional tumor and edema characteristics are associated with clinical presentations and survival outcomes in a large cohort of glioblastoma patients. Methods Patients with IDH‐wildtype glioblastoma who received brain MRI from 2010 to 2023 were included.
Daniel J. Zhou +16 more
wiley +1 more source
High Voltage, 2023 The direct bonding copper (DBC) substrates of insulated gate bipolar transistor (IGBT) modules degrade inevitably under cycling thermo‐mechanical stress, causing potential threat to the reliability of IGBT modules. However, little attention has been paid
Xiaotong Zhang +4 more
doaj +1 more source