Results 61 to 70 of about 428 (171)

Influence of irreversible demagnetization on the polarization of thermal radiation emitted by a hot cobalt wire

, 2019
to be submitted to Physical Review ...
Borghesani, A. F., Guarise, M., Carugno, G.   +2 more
openaire   +2 more sources

Enhancement of local anti-demagnetization ability of permanent magnet by selected area grain boundary diffusion toward high-speed motors

AIP Advances
The working environment of permanent magnets in high-speed motors is harsh, because they are seriously affected by multi-physical fields such as temperature, stress, weak magnetic control field, etc., and irreversible demagnetization is easy to occur ...
Weizhou Li, Jungang Cheng, Xusheng Lu, Yangyang Li, Dong Zhao, Wenli Pei, Ruilin Pei   +6 more
doaj   +1 more source

Improved Post-Assembly Magnetization Performance of Spoke-Type PMSM Using a 5-Times Divided Magnetizer with Auxiliary Pole Winding

Mathematics
Due to the reinforcement of energy efficiency regulations and the pursuit of sustainable development goals, the demand for high-efficiency electric motors has been steadily increasing. Rare-earth permanent magnets such as neodymium (Nd) and samarium (Sm)
Seung-Heon Lee, Jong-Hyun Kim, Won-Ho Kim   +2 more
doaj   +1 more source

Irreversible Partial Demagnetization Analysis for Different Permanent Magnet Synchronous Motor Rotor Topologies

2024 IEEE International Conference And Exposition On Electric And Power Engineering (EPEi)
This is the author  Accepted Manuscript (AAM).
BIRASA, Raymond, Jose E. Ruiz-Sarrio, Idris, Doha Kamal Mohamed, Jose A. Antonino-Daviu, Martis, Claudia   +4 more
openaire   +2 more sources

Demagnetization Fault Diagnosis for PMSM Drive System with Dual Extended Kalman Filter

World Electric Vehicle Journal
Aiming at the irreversible demagnetization of permanent magnet synchronous motors (PMSMs) under extreme working conditions, a fault diagnosis method for permanent magnet demagnetization based on multi-parameter estimation is proposed in this paper.
Jiahan Wang, Chen Li, Zhanqing Zhou
doaj   +1 more source

Demagnetization Analysis and Optimization Design of Low-Speed High Torque Permanent Magnet Synchronous Motor

IEEE Access
Permanent magnet synchronous motors are widely used in low-speed and high torque fields such as metallurgy and mining due to their advantages of high efficiency, high torque density, and high power density.
Weiliang Wu, Xiping Liu
doaj   +1 more source

Analysis of the Demagnetization of a PMSG Using a Coupled Electromagnetic–Fluid–Thermal Numerical Model

Energies
This article presents a multiphysics simulation methodology to predict the temperature-dependent demagnetization phenomenon of a 900 W permanent-magnet synchronous generator (PMSG).
Jorge E. Morón-Monreal, Francisco J. Martinez-Rios, Concepcion Hernandez, Marco A. Arjona   +3 more
doaj   +1 more source

Surrogate Modeling for Drive Co‐Simulation Including Local Irreversible Demagnetization Knowledge

International Journal of Numerical Modelling: Electronic Networks, Devices and Fields
ABSTRACTIn order to survey possible local demagnetization of permanent magnet drives during transient operations and/or faulty functioning in case of multi‐phase drives, co‐simulation including converter, vector control, and finite element model could be investigated. Nevertheless, expensive simulation time limits practically this solution.
T. Henneron, J. Tomezyk, E. Semail
openaire   +1 more source

Mathematical Modeling and Optimal Design for HRE-Free Permanent-Magnet-Assisted Synchronous Reluctance Machine Considering Electro-Mechanical Characteristics

Mathematics
This paper presents the design of a permanent-magnet-assisted synchronous reluctance motor (PMa-SynRM) for compressor applications using Sm-series injection-molded magnets that eliminate heavy rare-earth elements.
Yeon-Tae Choi, Su-Min Kim, Soo-Jin Lee, Jun-Ho Jang, Seong-Won Kim, Jun-Beom Park, Yeon-Su Kim, Dae-Hyun Lee, Jang-Young Choi, Kyung-Hun Shin   +9 more
doaj   +1 more source

Demagnetization Parameters Evaluation of Magnetic Shields Based on Anhysteretic Magnetization Curve. [PDF]

Materials (Basel), 2023
Yang J, Shi M, Zhang X, Ma Y, Liu Y, Yuan S, Han B.   +6 more
europepmc   +1 more source