Results 141 to 150 of about 432 (170)
Some of the next articles are maybe not open access.
1995
For the magnetic card security, we propose the irreversible magnetization change by a light irradiation without changing outward appearances of the card. A significant magnetization change was found by a light irradiation of 100 mW/cm 2 , 3 s for a powder sample of Mn–Bi preheated by 300°C and 3 hrs.
Koji Yamada +5 more
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For the magnetic card security, we propose the irreversible magnetization change by a light irradiation without changing outward appearances of the card. A significant magnetization change was found by a light irradiation of 100 mW/cm 2 , 3 s for a powder sample of Mn–Bi preheated by 300°C and 3 hrs.
Koji Yamada +5 more
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Effect of magnetization direction on irreversible magnet demagnetization in brushless dc motor
Journal of Applied Physics, 2008The magnetization direction of a permanent magnet is an important variable in the design process of a brushless dc motor. This paper describes the effect of the magnetization direction on the various characteristics. Especially, we concentrate on the irreversible demagnetization characteristic of a permanent magnet. Two kinds of magnetization direction
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2007 International Conference on Electrical Machines and Systems (ICEMS), 2007
Irreversible demagnetization which occurs in permanent magnet (PM) due to high temperature is main issue in design of traction motor for hybrid electric vehicle. In order to prevent irreversible demagnetization, eddy current loss in PM should be minimized. This paper deals with the optimum design to reduce eddy current loss in PM.
null Jae-Woo Jung +5 more
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Irreversible demagnetization which occurs in permanent magnet (PM) due to high temperature is main issue in design of traction motor for hybrid electric vehicle. In order to prevent irreversible demagnetization, eddy current loss in PM should be minimized. This paper deals with the optimum design to reduce eddy current loss in PM.
null Jae-Woo Jung +5 more
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High efficient permanent magnet actuator design by mitigating irreversible demagnetization effect
2015 IEEE Magnetics Conference (INTERMAG), 2015This paper proposed a new design method for high efficient permanent magnet actuator with considering the irreversible demagnetization of magnet. The nonlinear B-H characteristic of magnet, which is determined by the driving temperature and the reactive magnetic field strength, is applied to predict the magnetic performance of the actuator in a ...
S. Lim, S. Min, J. Hong
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Journal of the Physical Society of Japan, 1995
We have clarified the origin of the irreversibility involved in adiabatic demagnetization in the rotating frame (ADRF). The irreversibility is very high (≃50%) in single and double quantum ADRF for 27 Al nuclei in Al 2 O 3 , whereas it is very low (≃15%) in single quantum ADRF for 19 F in CaF 2 , 7 Li and 19 F in LiF.
Hiroshi Hatanaka, Tsuneo Hashi
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We have clarified the origin of the irreversibility involved in adiabatic demagnetization in the rotating frame (ADRF). The irreversibility is very high (≃50%) in single and double quantum ADRF for 27 Al nuclei in Al 2 O 3 , whereas it is very low (≃15%) in single quantum ADRF for 19 F in CaF 2 , 7 Li and 19 F in LiF.
Hiroshi Hatanaka, Tsuneo Hashi
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Irreversible magnet demagnetization analysis of IPM type BLDC motor by stator turn fault
2012 7th International Forum on Strategic Technology (IFOST), 2012A stator turn fault in a symmetrical three-phase machine cause a large circulating current to flow and subsequently generated excessive heat in shorted turns, generate irregular control current of the three phase leads to demagnetization. In this paper, the effect of the circulating current in shorted turns on the demagnetization of PM and motor ...
Kyung-Tae Kim +3 more
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Finite Element Simulation on Irreversible Demagnetization of Permanent Magnet Synchronous Generator
2022 9th International Conference on Condition Monitoring and Diagnosis (CMD), 2022Yonggang Jia +6 more
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Study on Robust Design of Irreversible Demagnetization of IPMSM for Railway Vehicles
Journal of the Korean Society for Railway, 2019Hyung-Sik Kong +5 more
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Irreversible Demagnetization Improvement Process of Hybrid Traction Motors with Dy-Free Magnets
Machines, 2023Hyun-Jo Pyo, Won-Ho Kim, Si-Woo Song
exaly
A study of irreversible demagnetization at low temperature for ferrite magnets
Electrical Engineering in Japan, 1973openaire +1 more source