Results 11 to 20 of about 22,831 (243)
Energies, 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
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Machines, 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
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Applied Sciences, 2021 The irreversible demagnetization of permanent magnets causes the deterioration of the performance in permanent magnet synchronous motors (PMSMs), which are used for electric vehicles.
Yong-min You, Keun-young Yoon
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Three-stage ultrafast demagnetization dynamics in a monolayer ferromagnet
Nature CommunicationsIntense laser pulses can be used to demagnetize a magnetic material on an extremely short timescale. While this ultrafast demagnetization offers the potential for new magneto-optical devices, it poses challenges in capturing coupled spin-electron and ...
Na Wu +4 more
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Demagnetization Fault Diagnosis of a PMSM Using Auto-Encoder and K-Means Clustering
Energies, 2020 In recent years, many motor fault diagnosis methods have been proposed by analyzing vibration, sound, electrical signals, etc. To detect motor fault without additional sensors, in this study, we developed a fault diagnosis methodology using the signals ...
Lien-Kai Chang +2 more
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Polarized phonons carry angular momentum in ultrafast demagnetization [PDF]
Nature, 2021 Magnetic phenomena are ubiquitous in nature and indispensable for modern science and technology, but it is notoriously difficult to change the magnetic order of a material in a rapid way.
S. Tauchert +10 more
semanticscholar +1 more source
Ab initio investigation of laser-induced ultrafast demagnetization of L10 FePt: Intensity dependence and importance of electron coherence [PDF]
Physical review B, 2023 We theoretically investigate the optically-induced demagnetization of ferromagnetic FePt using the time-dependent density functional theory (TDDFT). We compare the demagnetization mechanism in the perturbative and nonperturbative limits of light-matter ...
M. S. Mrudul, P. Oppeneer
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Dynamic demagnetization experiment on China-Russia Eastern Gas Pipeline
You-qi chuyun, 2022 The residual magnetism produced during the construction and inspection of long-distance oil and gas pipelines can cause the magnetic blow of welding arc, which may affect the welding progress and quality of pipelines and even threaten their intrinsic ...
Wenbo XUAN +5 more
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Frustrated magnet for adiabatic demagnetization cooling to milli-Kelvin temperatures [PDF]
Communications Materials, 2021 Generation of very low temperatures has been crucially important for applications and fundamental research, as low-temperature quantum coherence enables operation of quantum computers and formation of exotic quantum states, such as superfluidity and ...
Y. Tokiwa +5 more
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Irreversible demagnetization mechanism of permanent magnets during electromagnetic buffering
Defence Technology, 2021 The permanent magnets will be irreversibly demagnetized under high temperature and high velocity during the electromagnetic buffering. In this study, the magnetic field induced by eddy currents and the self-demagnetizing field of permanent magnet are ...
Zi-xuan Li +3 more
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