Results 11 to 20 of about 68,450 (269)

Topological magnon insulator in insulating ferromagnet [PDF]

open access: yesPhysical Review B, 2013
In the ferromagnetic insulator with Dzyaloshinskii-Moriya interaction, we theoretically predict and numerically verify a topological magnon insulator, where the charge-free magnon is topologically protected to transport along the edge while it is insulating in the bulk.
Zhang, L., Ren, J., Wang, J.-S., Li, B.
openaire   +2 more sources

‘Insulator bodies’ are aggregates of proteins but not of insulators [PDF]

open access: yesThe EMBO Reports, 2008
Chromatin insulators are thought to restrict the action of enhancers and silencers. The best-known insulators in Drosophila require proteins such as Suppressor of Hairy wing (Su(Hw)) and Modifier of mdg4 (Mod(mdg4)) to be functional. The insulator-related proteins apparently colocalize as nuclear speckles in immunostained cells.
Anton, Golovnin   +5 more
openaire   +2 more sources

Skyrme Insulators: Insulators at the Brink of Superconductivity

open access: yesPhysical Review Letters, 2017
10 pages, 4 ...
Erten, O.   +3 more
openaire   +5 more sources

Analysis of the insulation capability of polyester insulator

open access: yesJournal of the Franklin Institute, 2005
The lifetime of polyester resin samples has been determined with the ASTM D2303 inclined plane tracking test method (IPTTM) for different environmental effects. Most of the external factors have a unique degradation effect, hence the tracking image observed on polyester resin highly depends on these factors. The structure and topography of the tracking
Ayten Kuntman, Mukden Ugur, Ahmet Merev
openaire   +4 more sources

Study on high-temperature and high-voltage insulation characteristics of polypropylene blend with highly packed elastomeric domains for power cable applications

open access: yesPolymer Testing, 2023
In this paper, we report the high-temperature and high-voltage (HV) insulation characteristics of the polypropylene (PP) blend with highly packed elastomeric domains that showed excellent mechanical toughness in our previous study to find its suitability
Do-Kyun Kim   +8 more
doaj   +1 more source

In‐situ observation of electrical tree evolution in epoxy dielectrics with internal cracks

open access: yesHigh 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
doaj   +1 more source

Study on overvoltage characteristics and arrester configuration strategy for ±1 100 kV HVDC transmission lines

open access: yesThe Journal of Engineering, 2018
Overvoltage caused by faults or switching is one of the decisive factors affecting the insulation level of equipment in UHVDC transmission systems.
Xiaoguang Zhu   +6 more
doaj   +1 more source

A full sequence impedance modelling and stability analysis of the virtual synchronous generator with inner loops

open access: yesIET Renewable Power Generation, 2021
Virtual synchronous generator (VSG) has been widely studied owing to its inertia support to the grid. However, the stability of VSG is not analysed accurately for actual applications in previous studies that overlook voltage and current inner loops of ...
Yang Peng   +5 more
doaj   +1 more source

Research on protection block strategy of grounding faults in HVDC converter station

open access: yesThe 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
doaj   +1 more source

Soft start-up scheme for the hybrid distribution transformer

open access: yesThe 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

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