Results 11 to 20 of about 241,347 (311)
Energies, 2020 The converter transformer is a key equipment in high voltage direct current (HVDC) transmission system. Its oil-paper insulation system in the valve winding and outlet bushing experiences AC, DC, AC/DC, and transient impulse voltages simultaneously.
Lin Cheng +6 more
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Influence of low amounts of nanostructured silica and calcium carbonate fillers on the large-area dielectric breakdown performance of bi-axially oriented polypropylene [PDF]
, 2014 Influence of low amounts (1.0-2.0wt-%) of nanostructured silica and calcium carbonate fillers on the large area dielectric breakdown performance of bi-axially oriented polypropylene (BOPP) is analyzed.
S. Virtanen +13 more
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Energies, 2018 An AC-DC combined voltage is applied to the oil-pressboard insulation near the valve side during the operation of a converter transformer. To study the breakdown characteristics of an oil-pressboard insulation under such voltages, a typical plate ...
Qingguo Chen +3 more
doaj +1 more source
Time dependent dielectric breakdown and stress induced leakage current characteristics of 8Å EOT HfO2 N-MOSFETS [PDF]
, 2010 In this work we present the time dependent dielectric breakdown (TDDB) characteristics of LaO capped HfO2 layers with an equivalent oxide thickness of 8Å. The layers show maximum operating voltages in excess of 1V. Such high reliability can be attributed
Ragnarsson, Lars-Ake +8 more
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Experimental study on the partial discharge and AC breakdown properties of C(4)F(7)N/CO(2) mixture
High Voltage, 2019 As an environmental friendly insulating medium, C(4)F(7)N has received extensive attention in the past two years. In this study, the partial discharge (PD) and breakdown characteristics of C(4)F(7)N/CO(2) gas mixture were investigated using the gas ...
Yi Li +8 more
doaj +1 more source
Micromachines, 2022 This study investigates the operational characteristics of AlGaN/GaN high-electron-mobility transistors (HEMTs) by applying a slant-gate structure and drain-side extended field-plate (FP) for improved breakdown voltage.
Jun-Ho Lee +7 more
doaj +1 more source
Short-term Breakdown and Long-term Failure in Nanodielectrics: A Review [PDF]
, 2010 Nanodielectrics, which are concentrated in polymer matrix incorporating nanofillers, have received considerable attention due to their potential benefits as dielectrics.
Yunxa Zhang +15 more
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Dielectric breakdown characteristics of clean oil
Conference Record of the 1992 IEEE International Symposium on Electrical Insulation, 1993 The dielectric strength of highly filtered and dehydrated oil was investigated with AC and impulse voltages. The influence of particles on breakdown strength is discussed, taking into account the particle content factor. The scale effect of superclean oil, which was obtained from a modern cleaning system, is studied from a statistical viewpoint.
Hiroshi Kurita +2 more
openaire +2 more sources
Pre-breakdown Characteristics of Contaminated Power Transformer Oil [PDF]
, 2007 In this paper we have studied pre-breakdown characteristics of transformer oil in the presence of different levels of contamination. The contaminant is fibrous dust from pressboard insulation used for high voltage transformers.
Zuber, H M +3 more
core +1 more source
Breakdown Characteristic Research on Propylene Carbonate After Nano-Modification
Frontiers in Physics, 2022 Propylene carbonate (PC) has the advantages of great permittivity, high breakdown strength, and great environmental adaptability. However, the applications of propylene carbonate in pulsed power systems have been restricted by the significant polarity ...
Zhang Zicheng +5 more
doaj +1 more source