Results 11 to 20 of about 156,276 (219)
Физика волновых процессов и радиотехнические системы, 2023 In the article, the problem of choosing the shape of the envelope of the microwave pulse of a powerful generator, which provides the maximum radiated surface antenna energy in the pre-breakdown mode, is formulated in the form of an isoperimetric problem ...
Aleksey A. Volkov
doaj +1 more source
Impulse dielectric behaviour of dry air in sphere-plane gap
The Journal of Engineering, 2019 The dielectric strength of dry air is lower than that of SF(6), so it is very difficult to use dry air in extra-high-voltage-class gas-insulated equipment.
Zilu Jin +4 more
doaj +1 more source
The Journal of Engineering, 2019 The frequent forest fires become a serious threat to the performance of transmission lines’ external insulation, and large quantities of smoke (carbon black) and flying ashes are produced during the combustion of vegetation, reducing the dielectric ...
Daochun Huang +3 more
doaj +1 more source
IET Nanodielectrics, 2020 Polymer nanocomposites with improved dielectric permittivity and high breakdown strength are extremely desirable for the flexible electronic devices and power systems.
Ming-Sheng Zheng +6 more
doaj +1 more source
Influence of humidity on conduction processes in gas-insulated devices
High Voltage, 2020 Humidity has been considered as one of the main influencing factors that determine the conduction processes and electric strength of gas-insulated systems.
Malte Tschentscher +3 more
doaj +1 more source
IET Nanodielectrics, 2018 Polymer dielectrics with high energy density and low dielectric loss are highly desired due to the rapid development of electric devices. Among known polymers, poly(vinylidene fluoride-ter-trifluoroethylene-ter-chlorofluoroethylene) P(VDF-TrFE-CFE) is ...
Yingke Zhu, Pingkai Jiang, Xingyi Huang
doaj +1 more source
Designed Monomers and Polymers, 2018 Epoxy resin of 9,9′-bis-(3,5-dibromo-4-hydroxyphenyl) anthrone-10 (EANBr, EEW 490) was synthesized and was characterized by IR and 1HNMR . EANBr and EPK3251 cured resin (EANBrC) were characterized by DSC and TGA at 10°Cmin−1 under nitrogen atmosphere ...
Jabal D. Thanki +2 more
doaj +1 more source
Dielectric characterisation of Fe(3)P nanoparticles based ester oil
IET Nanodielectrics, 2018 The insulation as the root source of failure and ageing assessor makes it a crucial point for any power equipment design. The transformer's insulation requires an efficient dielectric fluid that acts as an ideal electrical insulant and better thermal ...
Qasim Khan +2 more
doaj +1 more source
IET Nanodielectrics, 2018 Polymer composite films with high energy density as well as high efficiency are promising dielectric materials in pulsed power systems. In improving the energy discharged efficiency, poly vinylidene fluoride-hexafluoropropylene [P(VDF-HFP)] film blended ...
Zunpeng Feng +4 more
doaj +1 more source
IET Science, Measurement & Technology, 2023 The stresses existing in power transformers lead to the generation of bubbles. They are the primary source that worsens and leads to insulation failure. Due to the complexity of bubble dynamics, it is challenging to figure out bubble mechanisms. However,
Niyomugabo Emmanuel Ladislas +4 more
doaj +1 more source