Results 21 to 30 of about 11,992 (214)

Ultrafast Dynamics of Demagnetization in FeMn/MnGa Bilayer Nanofilm Structures via Phonon Transport

open access: yesNanomaterials, 2022
Superdiffusive spin transport has been proposed as a new mechanism of ultrafast demagnetization in layered magnetic nanostructures and demonstrated experimentally.
Tianran Jiang   +5 more
doaj   +1 more source

Dynamics modeling and analysis of the permanent-magnet synchronous motors bearing-rotor-magnetic field under rotor demagnetize

open access: yesAdvances in Mechanical Engineering, 2021
For the phenomenon of rotor demagnetization of Permanent Magnet Synchronous Motor(PMSM), studying the dynamic modeling and analysis of demagnetization rotor.
Zhou Bifeng, Tang Guoning, Luo Yiping
doaj   +1 more source

Laser-Induced Ultrafast Magnetic Phase Transition in 2D Van Der Waals Antiferromagnetic Heterostructures. [PDF]

open access: yesAdv Sci (Weinh)
In this work, ultrafast laser‐induced spin transfer and spin relaxation dynamics in 2D van der Waals antiferromagnetic CrI3/CrGeTe3 heterostructures are investigated. Laser excitation is demonstrated to induce pronounced interlayer nonequilibrium spin dynamics and ultrafast magnetic moment reconstruction, driving a transition from an antiferromagnetic (
Wu Y   +5 more
europepmc   +2 more sources

Analysis and Experimental Verification of the Demagnetization Vulnerability in Various PM Synchronous Machine Configurations for an EV Application

open access: yesEnergies, 2021
Safety is a critical feature for all passenger vehicles, making fail–safe operation of the traction drive system highly important. Increasing demands for traction drives that can operate in challenging environments over wide constant power speed ranges ...
Gilsu Choi
doaj   +1 more source

Dynamic Modeling and Analysis of Demagnetizing Rotor of Permanent Magnet Synchronous Motor

open access: yesShock and Vibration, 2021
This study performs a dynamic modeling and analysis of the axial uniform demagnetization rotor of a motor to investigate the demagnetization peculiar for permanent magnet synchronous motor (PMSM).
Bifeng Zhou, Guoning Tang, Yiping Luo
doaj   +1 more source

Demagnetization Fault Detection and Location in PMSM Based on Correlation Coefficient of Branch Current Signals

open access: yesEnergies, 2022
To address such challenges as an uncertain number of demagnetization poles of the permanent magnet synchronous motor (PMSM) and cases in which the fault cannot be located, this paper proposes a fault identification and location methodology based on the ...
Yinquan Yu   +4 more
doaj   +1 more source

Demagnetization data

open access: yes, 2022
Demagnetization data produced by AF demagnetization of archive half core sections from IODP Site U1438 (Holes B, D, and E). The format is in LDGO which can be viewed using the MacPaleomag software (written by Geff Gee).
Marco Maffione (11572117)   +1 more
core   +1 more source

Magnetic design and testing of demagnetization facility with ring-shaped coil

open access: yesZhongguo Jianchuan Yanjiu, 2018
[Objectives] In order to achieve the fast and high quality demagnetization of ships,a new demagnetization technique adopting a ring-shaped working coil is proposed.
GUO Chengbao, ZHOU Weichang
doaj   +1 more source

Motor Current Signature Analysis-Based Permanent Magnet Synchronous Motor Demagnetization Characterization and Detection

open access: yesMachines, 2020
Neodymium-boron (NdFeB) permanent magnets (PMs) have been widely studied in the past years since they became the material of choice in permanent magnet synchronous machines (PMSMs).
Manel Krichen   +5 more
doaj   +1 more source

Analytical Modeling and Analysis of Permanent-Magnet Motor with Demagnetization Fault

open access: yesSensors, 2022
Factors such as insufficient heat dissipation and excessively high temperature can easily lead to demagnetization of the PMs in permanent-magnet (PM) motors.
Cenwei Shi   +3 more
doaj   +1 more source

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