Results 11 to 20 of about 228,369 (266)
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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Electrical and thermal properties of insulating oil-based nanofluids: a comprehensive overview
IET Nanodielectrics, 2019 Nanofluids, formed by adding nanoscale particles to insulating oil, are stable and homogeneous suspensions that present advanced performance of electrical insulation and heat dissipation.
Zhengyong Huang +6 more
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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
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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
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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
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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
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Journal of Harbin University of Science and Technology, 2020 In order to study the effect of moisture on breakdown characteristics of oilpaper insulation in complex electric field, this paper obtains the dielectric constant characteristics, conductive characteristics, dielectric loss characteristic and breakdown ...
LIU Qingsong +5 more
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AIP Advances, 2020 The breakdown of polymer insulators at a nanosecond scale is a serious problem for high-voltage devices and pulsed power systems. This paper reviews recent developments in research on the mechanisms and characteristics of the breakdown of polymers at a ...
Liang Zhao, Jian Cang Su, Chun Liang Liu
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Impact of III-Nitride/Si Interface Preconditioning on Breakdown Voltage in GaN-on-Silicon HEMT
Micromachines, 2021 In this paper, an AIGaN/GaN metal-oxide-semiconductor high-electron-mobility transistor (MOS-HEMT) device is realized. The device shows normal ON characteristics with a maximum current of 570 mA/mm at a gate-to-source voltage of 3 V, an on-state ...
Abdelkrim Khediri +4 more
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Study on breakdown characteristics of nano-modified transformer oil at low temperature
Energy Reports, 2023 Studying the breakdown characteristics of nano-modified transformer oil at low temperature is helpful to improve the breakdown voltage of transformer oil at low temperature.
Chunxu Qin +4 more
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