Results 201 to 210 of about 18,524,351 (243)

Inductive Acceleration with High Demagnetization Rate ∂B/∂t

Japanese Journal of Applied Physics, 1995
A high demagnetization rate ∂B/∂t can be obtained through fast decoupling of a magnetic field from an electric circuit which generates the magnetic field. Nowadays fast decoupling is possible by present switching technologies. Consequently, a high particle-acceleration gradient can be obtained in an inductive acceleration system compared with that
Shigeo Kawata Shigeo Kawata
semanticscholar   +3 more sources

Reindexing Method for Ultralow-Sampling-Rate Data Used in the Diagnosis of Demagnetization Faults in IPMSM

IEEE Transactions on Instrumentation and Measurement
This study proposes a data reindexing method that integrates the fast Fourier transform (FFT) and a genetic algorithm (GA) to reconstruct features of back electromotive force (Back EMF) from ultralow sampling rate data (ULSD) obtained via a low-speed ...
Chin-Sheng Chen, You-Yi Wu, Chia-Jen Lin, Feng-Chieh Lin   +3 more
openaire   +3 more sources

Irreversible demagnetization risk of rotor-surface-mounted permanent magnets at rated and short-circuit modes in two-pole multi-megawatt machines

2023 IEEE 14th International Conference on Power Electronics and Drive Systems (PEDS), 2023
Post-print / Final ...
Aarniovuori Lassi, Abramenko Valerii, Petrov Ilya, Pyrhönen Juha, Vostrov Konstantin   +4 more
openaire   +2 more sources

Demagnetization Study of Permanent Magnet Machine Under Three Phase Short Circuit

2023 IEEE 6th International Electrical and Energy Conference (CIEEC), 2023
The influence factors of the demagnetization magnetic field of permanent magnet machine are complicated. This paper investigated the influence of rotor position and current angle on demagnetization by simulation.
Wang Peng, Wang Kun, F. Meng
semanticscholar   +1 more source

Demagnetization Fault Analysis of FSCW-PMM with Four-Layer Star-Delta Winding

International Conference on Electrical Machines and Systems, 2023
In view of the problem of permanent magnet demagnetization, this article first focuses on the fractional slot concentrated winding permanent magnet machine (FSCW-PMM) for the interior V-shaped structure connected with four-layer star-delta (Y-$\Delta ...
Zhen-Fei Chen, Chenyang Fan, Xiangmin Wan, Zhi-Hao Ling, Feng Wang   +4 more
semanticscholar   +1 more source

PMASynRM Local Demagnetization Fault Behavior Study Under Targeted Harmonic Excitation

Annual Meeting of the IEEE Industry Applications Society, 2023
Permanent Magnet Assisted Synchronous Reluctance Motors (PMASynRM) are high energy density topologies, widely used in the automotive industry. However, their very good performances and efficiencies can be severely impaired by irreversible demagnetization
Jérémy Creux, Najla Haje Obeid, T. Boileau, Farid Meibody-Tabar   +3 more
semanticscholar   +1 more source

Design and Analysis of Interior Permanent Magnet Motor for Electric Vehicle Application Considering Irreversible Demagnetization

IEEE transactions on industry applications, 2022
The design of permanent magnet motors for the battery-powered electric vehicle has different aspects. In this study, the conceptual design process of an electric machine for Sedan Low car is presented.
F. Mahmouditabar, A. Vahedi, N. Takorabet   +2 more
semanticscholar   +1 more source

Demagnetization Analysis of a V-shape PM Salient Pole Wind Generator under Sudden Short-Circuits after Rated Load Condition

2020 12th IEEE PES Asia-Pacific Power and Energy Engineering Conference (APPEEC), 2020
To improve the output parameters of PM salient pole wind generator, the V-shape permanent magnet salient pole wind generator (VPMSPWG) was previously proposed. Its special structure can not only protect PMs well, but also increase the generator’s output power. In this paper, its PM demagnetization performance under three-phase symmetrical short-circuit
Yujing Guo, Yan Ding, Ping Jin
openaire   +1 more source

Barkhausen noise, subloops, demagnetization curves, and universal scaling tuning disorder, field sweep rate, and history

SPIE Proceedings, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Karin A. Dahmen, John H. Carpenter, Amit P. Mehta, Andrea C. Mills, James P. Sethna, Alex Travesset, Michael B. Weissman, Robert A. White   +7 more
openaire   +1 more source

Ultrafast Demagnetization Rates in Two-Component Magnetic Materials

2014
The recently derived Landau-Lifshitz-Bloch equation of motion for two-component magnetic systems, including ferri- ferro- and antiferromagnets, provides a framework to analyze species dependent ultra fast demagnetization rates. In agreement with reported experimental observations, we show that Gd sublattice demagnetizes slower then FeCo in GdFeCo ...
O. Chubykalo-Fesenko, U. Atxitia, P. Nieves, J. Barker, R. W. Chantrell   +4 more
openaire   +1 more source