Results 21 to 30 of about 471,713 (315)
Research on protection block strategy of grounding faults in HVDC converter station
The Journal of Engineering, 2019 DC grounding fault is a typical fault for HVDC system. In order to obtain smoother, faster, and more secure transient process, the DC protection block strategy is used to remove and isolate the converter to prevent the accident enlargement and reduce the
Yichen Liu +5 more
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Soft start-up scheme for the hybrid distribution transformer
The Journal of Engineering, 2018 Hybrid distribution transformer (HDT) is an integrated system of the conventional distribution transformer and the PWM converters, which can greatly enhance the controllability of the conventional distribution transformer and is important for the ...
Yibin Liu +5 more
doaj +1 more source
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
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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
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Theory of Mott insulator–band insulator heterostructures [PDF]
Physical Review B, 2004 11 pages, 9 ...
Okamoto, Satoshi, Millis, Andrew J.
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
Transcription Independent Insulation at TFIIIC-Dependent Insulators [PDF]
Genetics, 2009 Abstract Chromatin insulators separate active from repressed chromatin domains. In yeast the RNA pol III transcription machinery bound to tRNA genes function with histone acetylases and chromatin remodelers to restrict the spread of heterochromatin.
Lourdes, Valenzuela +2 more
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High Voltage, 2022 The presence of lightning impulses (LIs) on the DC waveform can seriously influence the insulation performance of a GIL system. The waveshape can be a superposition of the DC and impulse waveform. In this study, the behaviour of partial discharge (PD) on
Haotian Wang +5 more
doaj +1 more source
Detection of decomposition products of SF6/air gas mixture by electron attachment mass spectrometry
High Voltage, 2022 Sulphur hexafluoride (SF6) is widely used in gas insulation, and its decomposition products can be used to diagnose potential insulation failures.
Huan Yuan +5 more
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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