Results 1 to 10 of about 93,126 (269)

Research on distribution of winding leakage magnetic field of three-phase dry type transformer under short-circuit condition

open access: yesEnergy Reports, 2023
Leakage flux magnitude and pattern greatly affect transformer short-circuit resistance. In this paper, finite element calculations and experimental measurements is used to calculate the leakage magnetic field of a transformer.
Tiannan Meng   +5 more
doaj   +1 more source

Impulse Magnetized Magnetic Screws [PDF]

open access: yesIEEE Transactions on Magnetics, 2019
This paper is an investigation in the performance of two types of magnetic screws (MSs). The first is the magnet to magnet and consists of permanent magnet (PM) nut and PM screw and the second is a magnet to reluctance and consists of PM nut and a double-start reluctance screw.
Mohamed, H.M., Atallah, K.
openaire   +2 more sources

Host age structure reshapes parasite symbiosis: collaboration begets pathogens, competition begets virulent mutualists

open access: yesBiology Direct, 2022
Background Symbiotic relationships are ubiquitous in the biosphere. Inter-species symbiosis is impacted by intra-specific distinctions, in particular, those defined by the age structure of a population.
Carsten O. S. Portner   +6 more
doaj   +1 more source

Analysis of temperature characteristics of power transformer withstand short circuit shock for two seconds

open access: yesEnergy Reports, 2023
The occurrence of a short-circuit fault in a transformer results in a rapid increase in the short-circuit current, and the temperature of the transformer winding rises rapidly.
Junyang Wang   +5 more
doaj   +1 more source

Magnetic Catalysis Versus Magnetic Inhibition [PDF]

open access: yesPhysical Review Letters, 2013
We discuss the fate of chiral symmetry in an extremely strong magnetic field B. We investigate not only quark fluctuations but also neutral meson effects. The former would enhance the chiral-symmetry breaking at finite B according to the Magnetic Catalysis, while the latter would suppress the chiral condensate once B exceeds the scale of the hadron ...
Fukushima, Kenji, Hidaka, Yoshimasa
openaire   +3 more sources

Electrostatic Simulations for the DUNE ND-GAr Field Cage

open access: yesParticles, 2022
ND-GAr is one of three detector systems in the design of the DUNE Near Detector complex, which will be located on the Fermilab campus, sixty meters underground and 570 m from the source of an intense neutrino beam. ND-GAr will consist of a cylindrical 10-
Christopher Hayes, Jon Urheim
doaj   +1 more source

Development of a rapid cooling atomizing method and production of high-Bs nanocrystalline powders containing large-sized particles

open access: yesAIP Advances, 2020
We attempted to produce nanocrystalline soft magnetic powders with a high saturation magnetic flux density (Bs) and containing large-sized particles using a modified water atomization system named “HPWA/YK.” Almost fully amorphous powders containing ...
K. Uji   +4 more
doaj   +1 more source

Effects of shrink fitting on iron losses of a permanent magnet synchronous motor with an amorphous core

open access: yesIET Electric Power Applications, 2022
In order to investigate the effects of shrink fitting on the amorphous core, a test device is designed and the magnetisation and specific iron loss characteristics of the amorphous core are measured.
Longfei Zhu   +3 more
doaj   +1 more source

Loss Calculation and Thermal Analysis for High-Speed Permanent Magnet Synchronous Machines

open access: yesIEEE Access, 2020
The small size of high-speed permanent magnet synchronous machines (PMSMs) makes the increase of loss density and the difficulty of heat dissipation.
Chao Zhang   +3 more
doaj   +1 more source

Magnetic Interference on Cardiac Implantable Electronic Devices From Apple iPhone MagSafe Technology

open access: yesJournal of the American Heart Association: Cardiovascular and Cerebrovascular Disease, 2021
Background Magnet wireless charging is being utilized increasingly in current generation smartphones. Apple's MagSafe is a proprietary wireless charging technology with an array of magnets that has the capacity to generate magnet fieldstrength >50 gauss (
Fahd Nadeem   +3 more
doaj   +1 more source

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