Results 21 to 30 of about 22,831 (243)

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

Accurate SM Disturbance Observer-Based Demagnetization Fault Diagnosis With Parameter Mismatch Impacts Eliminated for IPM Motors

open access: yesIEEE transactions on power electronics, 2023
This letter proposes a novel sliding mode (SM) disturbance observer-based technique to diagnose demagnetization fault of interior permanent magnet (IPM) motors with stator parameter mismatch impacts eliminated.
Yaofei Han   +5 more
semanticscholar   +1 more source

Demagnetization Fault Diagnosis of Permanent Magnet Synchronous Motors Based on Stator Current Signal Processing and Machine Learning Algorithms

open access: yesItalian National Conference on Sensors, 2023
Reliable fault diagnosis and condition monitoring are essential for permanent magnet synchronous motor (PMSM) drive systems with high-reliability requirements. PMSMs can be subject to various types of damage during operation.
P. Pietrzak, M. Wolkiewicz
semanticscholar   +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

The Demagnetization Phenomenon in PM Machines: Principles, Modeling, and Design Considerations

open access: yesIEEE Access, 2023
Permanent Magnet (PM) machines have attracted much attention due to their high power-torque density, high efficiency, high dynamic response performance, high power factor, and simple structure.
F. Mahmouditabar   +2 more
semanticscholar   +1 more source

Demagnetization Parameters Evaluation of Magnetic Shields Based on Anhysteretic Magnetization Curve

open access: yesMaterials, 2023
To achieve the nearly zero-field environment, demagnetization is an indispensable step for magnetic shields composed of high-permeability material, which adjusts the magnetization of the material to establish magnetic equilibrium with the environmental ...
Jianzhi Yang   +6 more
semanticscholar   +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

MagTense: a micromagnetic framework using the analytical demagnetization tensor [PDF]

open access: yes, 2021
We present the open source micromagnetic framework, MagTense, which utilizes a novel discretization approach of rectangular cuboid or tetrahedron geometry “tiles” to analytically calculate the demagnetization field.
R. Bjørk   +3 more
semanticscholar   +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

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