Results 11 to 20 of about 194,453 (318)

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

Complexity of magnetization and magnetic simplification

open access: yesPhysical Review D, 2023
We use the complexity=volume (CV) prescription to study the effect of a magnetic field on the computational complexity for states in the gauge theories dual to two different gravitational models. In one of these theories the complexity increases with the intensity of the magnetic field, while in the other a more interesting behavior is discovered ...
Daniel Ávila   +2 more
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

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

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

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

Characterization of Permanent Magnet Magnetization [PDF]

open access: yesIEEE Transactions on Magnetics, 2017
The performances of electrical machines highly depend on the behavior of materials, such as steel, copper, and permanent magnet. This paper focuses on permanent magnets whose magnetization must be precisely known. Thus a non-destructive approach which includes a combination of experiments and inverse problem, using the magnetostatic moment method, is ...
Laure Arbenz   +4 more
openaire   +2 more sources

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

Multi-criteria based design approach of multiphase permanent magnet low speed synchronous machines [PDF]

open access: yes, 2009
Version éditeur disponible à cette adresse : http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4797497&isnumber=4797494A design methodology dedicated to multi-phase permanent magnet synchronous machines (PMSMs) supplied by pulse width modulation ...
CHARPENTIER, Jean-Frederic   +3 more
core   +1 more source

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