Results 91 to 100 of about 1,107,400 (287)
, 2016 Type II insulation systems, typical of MV motors or generators, were aged under sequential thermal cycling and voltage, and diagnostic quantities related to partial discharge activity recorded, such as partial discharge inception voltage (PDIV ...
CIANI, FABIO +7 more
core +1 more source
Data‐Driven Discovery of Unconventional Antiferromagnets
Advanced Science, EarlyView.A high‐throughput workflow that combines the physics‐informed pre‐screening, high‐throughput exchange calculations, Luttinger‐Tisza analysis and symmetry classification is established for accurate identification of unconventional antiferromagnets from the broad structural database.
Qirui Cui +3 more
wiley +1 more source
Effect of thermally aged oil on space charge dynamics in oil/paper insulation system
, 2011 The formation of space charge in oil/paper insulation system can lead to material degradation in the high electrical field region and affect system reliability.
Hao, Jian, Liao, Ruijin, Chen, George
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Journal of Engineering and Sustainable Development, 2014 The experimental and numerical investigation has been performed in this work to evaluate the performance of the U-longitudinal finned tube heat exchanger. Four pairs of U-shaped longitudinal fins were selected and manufactured from copper material and
Qasim Saleh Mahdi +2 more
doaj
Temperature effect on space charge dynamics in XLPE insulation [PDF]
, 2007 This paper reports on space charge evolution in crosslinked polyethylene (XLPE) planar samples approximately 1.20 mm thick subjected to electric stress level of 30 kVdc/mm under four temperature 25 oC, 50 oC, 70 oC and 90 oC for 24 hours.
Y.l. Chong +7 more
core +1 more source
Differential Tissue‐Coupled Powering for Battery‐Free Injectable Electroceuticals
Advanced Science, EarlyView.A thread‐like injectable neural stimulator is powered through differential tissue‐coupled powering (DTCP), which harvests RF‐frequency tissue potentials with an elongated receiver while preserving a injectable cross‐section. The system integrates an ASIC, stimulation electrodes, and a portable transmitter, enabling wireless peripheral nerve stimulation,
Han Wu +13 more
wiley +1 more source
Advanced Science, EarlyView.Oxygen vacancy migration is a key degradation mechanism for the majority of MLCCs. There are limitations with spatially identifying regions of a capacitor that have degraded due to oxygen vacancy migration. This work showcases ultrasonic attenuation as a non‐electrical and nondestructive technique of identifying oxygen vacancy degraded regions of an ...
Haley N. Jones +3 more
wiley +1 more source
Recovery voltage measurement on oil-paper insulation with simple geometry and controlled environment
, 2004 Using the recovery voltage of oil-paper insulation to diagnose its state of maintenance is very popular among electrical engineers. Many advantages of using recovery voltage includes non-intrusive, easy to operate, more resistant to noise compare to ...
Kuang, Y C, Jarman, P, Chen, G
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ResearchTopological insulating states in 2-dimensional (2D) materials are ideal systems to study different types of quantized response signals due to their in gap metallic states. Very recently, the quantum spin Hall effect was discovered in monolayer TaIrTe 4 via the observation of quantized longitudinal conductance that ...
Junwen Lai +6 more
openaire +4 more sources
Advanced Science, EarlyView.A high‐power hybrid nanogenerator (HP‐HNG) with multi‐degree‐of‐freedom mechanical coupling is reported, integrating multi‐directional wave energy for output to achieve 1 + 1 > 2 energy harvesting. The HP‐HNG achieves a peak output power of 0.764 W, corresponding to a peak power density of 127.303 W m−3. At a wave frequency of 1 Hz, the HP‐HNG delivers
Shuai Ding +9 more
wiley +1 more source