Results 11 to 20 of about 3,593 (213)
Demagnetization Severity Detection in Permanent Magnet Synchronous Motors Based on Temperature Signal and Convolutional Neural Network [PDF]
SensorsTo address the difficulty of detecting demagnetization severity in permanent magnet synchronous motors (PMSMs), this paper proposes a demagnetization severity detection method based on temperature signal and Convolutional Neural Network (CNN). First, the
Zhiqiang Wang +5 more
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Analytical Modeling and Analysis of Permanent-Magnet Motor with Demagnetization Fault
Sensors, 2022 Factors such as insufficient heat dissipation and excessively high temperature can easily lead to demagnetization of the PMs in permanent-magnet (PM) motors.
Cenwei Shi +3 more
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On-Line Detection of Demagnetization for Permanent Magnet Synchronous Motor via Flux Observer
Machines, 2022 Demagnetization in permanent magnet synchronous motor (PMSM), caused by high temperature or inverse magnetic field, may increase loss and torque ripple, and even degrade the system stability in severe cases.
Liqian Cao, Zhong Wu
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Disambiguation of Uniform Demagnetization Fault From Position Sensor Fault in FOC PMSM Applications
IEEE Access, 2022 Electrification of higher torque density applications in the transportation sector and robotics sector are primarily met with permanent magnet synchronous machines (PMSMs), attributing to their unique properties.
Sandun S. Kuruppu, Sunil G. Abeyratne
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Geophysical Research Letters, 1981 The effects of pressure on the ramanent magnetization of rocks may well be important in regions of low geothermal gradients, for example subduction zones, or at localities where a magnetization is associated with a meteorite impact. In a series of experiments undertaken to determine the effects of hydrostatic pressure on the saturation magnetic ...
G. W. Pearce, J. A. Karson
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Homing of Magnetized and Demagnetized Pigeons [PDF]
Journal of Experimental Biology, 1988 ABSTRACT Homing pigeons appear to use the earth’s magnetic field as a compass and perhaps as part of their position-finding system or ‘map’. The sensory system they use to detect magnetic fields is unknown, but two current possibilities are some mode of response by the pineal organ or by the visual system, or it may be based on the ...
C, Walcott, J L, Gould, A J, Lednor
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Elektrotehnìka ta Elektroenergetika, 2019 Purpose. Obtaining analytical calculated dependencies for finding the optimal time of magnetization and demagnetization of stopped frequency-regulated synchronous motors and the corresponding minimum energy loss in these motors for the regimes of ...
V.A. Volkov
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Indirect excitation of ultrafast demagnetization [PDF]
Scientific Reports, 2016 AbstractDoes the excitation of ultrafast magnetization require direct interaction between the photons of the optical pump pulse and the magnetic layer? Here, we demonstrate unambiguously that this is not the case. For this we have studied the magnetization dynamics of a ferromagnetic cobalt/palladium multilayer capped by an IR-opaque aluminum layer ...
Boris, Vodungbo +27 more
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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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