Results 21 to 30 of about 9,614,342 (296)

Eddy Current Losses in Transformers [PDF]

open access: yesTransactions of the American Institute of Electrical Engineers, 1900
n ...
openaire   +2 more sources

Interior Permanent Magnet Synchronous Motor Design for Eddy Current Loss Reduction in Permanent Magnets to Prevent Irreversible Demagnetization

open access: yesEnergies, 2020
We designed and analyzed an interior permanent magnet synchronous motor (IPMSM) to prevent irreversible demagnetization of the permanent magnets (PMs). Irreversible demagnetization of NdFeB PMs mainly occurs due to high temperature, which should thus be ...
Jae-Woo Jung   +3 more
doaj   +1 more source

A Novel Sleeve Design to Reduce the Eddy Current Loss of High-Speed Electrical Machines

open access: yesMachines, 2023
Demand for high-speed motors is increasing. Surface-mounted permanent magnet synchronous motors (SPMSM) used in high-speed applications have magnets attached to the rotor, so there is a risk of damage and scattering due to centrifugal force as the speed ...
Seung-Heon Lee   +4 more
doaj   +1 more source

Electromagnetic-Thermal Model for Improved Axial-Flux Eddy Current Couplings With Combine Rectangle-Shaped Magnets

open access: yesIEEE Access, 2018
An improved structure for axial-flux eddy current couplings with combined rectangleshaped magnets is proposed to minimize cogging torque without sacrificing torque density. Then, a novel analytical electromagnetic-thermal model, which takes the change of
Di Zheng   +5 more
doaj   +1 more source

Eddy current loss in double-sided cored slotless type permanent magnet linear synchronous generator using analytical method

open access: yesAIP Advances, 2017
This paper describes the eddy current loss analysis of a double-sided cored slotless-type permanent magnet linear synchronous generator using the space harmonic method.
Gang-Hyeon Jang   +4 more
doaj   +1 more source

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

Multi-objective optimal design of permanent magnet eddy current retarder based on NSGA-II algorithm

open access: yesEnergy Reports, 2022
As a new type of vehicle auxiliary braking device, permanent magnet eddy current retarder has a wide application prospect. In this paper, the linear layer analysis method and non-dominated sorting genetic algorithm-II (NSGA-II) are combined to optimize ...
Bowen Niu, Dazhi Wang, Pengyi Pan
doaj   +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

Rotor eddy current power loss in permanent magnet synchronous generators feeding uncontrolled rectifier loads

open access: yes, 2014
Analytical methods and transient finite element analysis (FEA) with rotating mesh are used to calculate rotor eddy current power loss in a permanent magnet synchronous generator (PMSG) connected to an uncontrolled bridge rectifier.
Sharkh, S.M.   +4 more
core   +1 more source

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