Results 141 to 150 of about 1,681 (168)

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 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

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
openaire   +1 more source

Accessing Ultrafast Demagnetization Rates of Ferrimagnetic Thin Films through THz Emission Spectroscopy

2023 IEEE International Magnetic Conference - Short Papers (INTERMAG Short Papers), 2023
Guillermo Nava Antonio, Quentin Remy, Michel Hehn, Stéphane Mangin, Chiara Ciccarelli   +4 more
openaire   +1 more source

A two-stage Fault Diagnosis Scheme of Partial Demagnetization Faults in PMSMs with Low Labelled Rates

2023 IEEE International Electric Machines & Drives Conference (IEMDC), 2023
Mahmoud S. Mahmoud, H. V. Khang, Jagath Senanayaka, Kjell G. Robbersmyr, Ruben Panadero   +4 more
openaire   +1 more source

Irreversible demagnetization mechanism of permanent magnets during electromagnetic buffering

Defence Technology, 2021
Guolai Yang, Jia-Hao Li
exaly  

MagTense: A micromagnetic framework using the analytical demagnetization tensor

Journal of Magnetism and Magnetic Materials, 2021
Rasmus Bjørk, K K Nielsen
exaly  

Ultrafast Electron Correlations and Memory Effects at Work: Femtosecond Demagnetization in Ni

Physical Review Letters, 2020
Shree Ram Acharya, G P Zhang, Volodymyr Turkowski   +2 more
exaly