Results 31 to 40 of about 174,153 (305)

Analytical Prediction and Analysis of Electromagnetic-Thermal Fields in PM Eddy Current Couplings With Injected Harmonics Into Magnet Shape for Torque Improvement

open access: yesIEEE Access, 2020
To improve the output torque in permanent magnet (PM) eddy current couplings, a new structure based on harmonics injection into the magnet optimization theory is proposed.
Di Zheng, Xifeng Guo
doaj   +1 more source

A best-fit model of power losses in cold rolled-motor lamination steel operating in a wide range of frequency and magnetization [PDF]

open access: yes, 2007
A procedure is described for identifying a mathematical model of core losses in ferromagnetic steel based on a minimal amount of experimental data. The new model has a hysteresis loss multiplicative coefficient variable only with frequency, a hysteresis ...
Ionel, D.M., Popescu, M.
core   +1 more source

A correction method for the frequency dependence of eddy current loss power of converter transformer

open access: yesDiance yu yibiao
At present, the eddy current loss of the converter transformer is estimated based on an extrapolation method recommended by the IEC-61378-2 standard and GB/T 18494.2 standard. However, practical measurements already show the recommended method has a poor
ZHENG Xin   +5 more
doaj   +1 more source

Eddy current loss analysis of underwater wireless power transfer systems with misalignments

open access: yesAIP Advances, 2018
Underwater wireless power transfer (WPT) has gained a lot of popularity in recent years. In the seawater environment, the electrical conductivity is non-negligible compared with that in the air.
Zhengchao Yan   +5 more
doaj   +1 more source

Influence of the voltage taps position on the self-field DC and AC transport characterization of HTS superconducting tapes

open access: yes, 2013
The current-voltage (I-V) curve is the basic characteristic of a superconducting wire or tape. Measuring I-V curves is generally problematic when samples have poor stabilization.
Goldacker, W.   +4 more
core   +1 more source

Analytical prediction of rotor eddy current loss due to stator slotting in PM machines [PDF]

open access: yes, 2001
Paper presented during the 2010 IEEE Conference, Electrical Machines and Systems, 2001. ICEMS 2001, Shenyang . The original publication is available at http://research.ee.sun.ac.za/emr/files/u1/2010-ECCE-Wills.pdf and also http://ieeexplore.ieee.org/xpls/
Kamper, Maarten J., Wills, Dominic A.
core   +1 more source

Observations of water mass transformation and eddies in the Lofoten basin of the Nordic Seas [PDF]

open access: yes, 2015
Author Posting. © American Meteorological Society, 2015. This article is posted here by permission of American Meteorological Society for personal use, not for redistribution. The definitive version was published in Journal of Physical Oceanography 45 (
Richards, Clark G., Straneo, Fiamma
core   +1 more source

Study of Rotor Slot Wedge Eddy Current Loss of Nuclear Power Turbo-generator under Negative Sequence Operation

open access: yesJournal of Harbin University of Science and Technology, 2018
In order to study the generator rotor slot wedge eddy current loss under different conditions . The 1407MVA turbo generator at half speed is researched as an example. Mathematical model is established in 2D electromagnetic field.
GE Bao-jun   +5 more
doaj   +1 more source

Investigation of Eddy Current Loss and Structure Design with Magnetic-Thermal Coupling for Toothless BLDC High-Speed PM Motor

open access: yesMachines, 2022
Brushless direct current (BLDC) permanent magnet (PM) synchronous motors are in high demand for ventilator applications owing to their high speed, high efficiency, and other significant features.
Jingjuan Du   +8 more
doaj   +1 more source

Eddy-current loss prediction in the rotor magnets of a permanent magnet synchronous generator with modular winding feeding a rectifier load [PDF]

open access: yes, 2011
In a permanent magnet synchronous generator (PMSG) with modular winding, significant eddy current may be induced in the rotor magnets due to asynchronous rotating stator magneto-motive forces (MMFs), and a rectifier load may signify the situation further.
Dong, J   +4 more
core   +1 more source

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