Mechanism-Based Fault Diagnosis Deep Learning Method for Permanent Magnet Synchronous Motor [PDF]
SensorsAs an important driving device, the permanent magnet synchronous motor (PMSM) plays a critical role in modern industrial fields. Given the harsh working environment, research into accurate PMSM fault diagnosis methods is of practical significance.
Li Li +3 more
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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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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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Element-resolved ultrafast demagnetization rates in ferrimagnetic CoDy [PDF]
Physical Review B, 2017 6 Figure, 2 ...
Fert , T. +9 more
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Enhancement of ultrafast demagnetization rate and Gilbert damping driven by femtosecond laser-induced spin currents in Fe81Ga19/Ir20Mn80 bilayers [PDF]
Physical Review B, 2019 In spintronics applications, ultrafast spin dynamics have to be controlled at femtosecond (fs) timescales via fs-laser radiation. At such ultrafast timescales, the effect of the Gilbert damping factor α on ultrafast demagnetization time should be considered.
Zhang, Wei +7 more
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Optimal Design of Spoke-Type IPM Motor Allowing Irreversible Demagnetization to Minimize PM Weight
IEEE Access, 2021 In this study, we introduce an optimal design for a spoke-type interior permanent magnet (IPM) motor that can minimize PM weight by allowing irreversible demagnetization, unlike the conventional motor design method that does not allow irreversible ...
Keun-Young Yoon, Kyu-Yun Hwang
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Irreversible Demagnetization Improvement Process of Hybrid Traction Motors with Dy-Free Magnets
Machines, 2022 Permanent magnet synchronous motors (PMSMs), with their high power density, high efficiency, and thermal stability, are widely used nowadays. PMSM magnets are composed of rare earth elements.
Si-Woo Song +4 more
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Fast Demagnetization and Vibration Reduction in Switched Reluctance Motor Drive System
IEEE Access, 2021 In this paper, a Switched Reluctance Motor (SRM) drive system is proposed to make a trade-off between torque profile and vibration amplitude. In the proposed drive system, the power factor correction and fast demagnetization are achieved using a single ...
Zahra Sadeghi +3 more
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Comparing Ultrafast Demagnetization Rates Between Competing Models for Finite Temperature Magnetism [PDF]
Physical Review Letters, 2013 We investigate a recent controversy in ultrafast magnetization dynamics by comparing the demagnetization rates from two frequently used but competing descriptions for finite temperature magnetism, namely a rigid band structure Stoner-like approach and a system of localized spins. The calculations on the localized spin system show a demagnetization rate
Schellekens, A.J., Koopmans, B.
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A vibration reduction method based on smooth voltage PWM control of switched reluctance machines
Energy Reports, 2022 At the beginning of the demagnetization instant of Switched Reluctance Machines (SRMs), the terminal voltage of the phase winding varies from the positive value of power supply to its negative with a sudden change. And this produces a high change rate of
Man Zhang +5 more
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