Results 41 to 50 of about 768,970 (347)
A correction method for the frequency dependence of eddy current loss power of converter transformer
Diance yu yibiaoAt 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
, 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
Prediction of 3D High Frequency Eddy Current Loss in Rotor Magnets of SPM Machines [PDF]
, 2016 This paper proposes a computationally efficient method, for accurate prediction of 3-dimensional (3D) high frequency eddy current loss in the rotor magnets of surface mounted permanent magnet machines employing the imaging method.
Chen, L. +5 more
core +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]
, 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
Iron Losses Prediction with PWM Supply Using Low and High Frequency Measurements: Analysis and Results Comparison [PDF]
, 2008 In this paper, two different methods for iron loss prediction are analyzed. The first method is based on the classical separation of loss contributions (hysteresis, eddy-current, and excess losses).
Boglietti, Aldo +2 more
core +1 more source
IEEE transactions on energy conversion, 2020 This article presents a new rotor design to reduce rotor eddy current loss of a high-speed permanent magnet synchronous machine for flywheel energy storage system.
Zichong Zhu +4 more
semanticscholar +1 more source
Journal 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
Machines, 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
A.C. loss contributions of the transport current and transverse field caused by combined action in a multifilamentary wire [PDF]
, 1985 A.c. losses caused by an a.c. transport current and a transverse a.c. magnetic field during simultaneous action were measured. The loss contributions have been obtained separately.
Klundert, L.J.M. van de +3 more
core +2 more sources
Energies, 2023 A method is proposed to comprehensively study the eddy and circulating current losses of stator winding wound by multiple parallel strands, to further improve the power density of stator iron coreless permanent magnet brushless DC (PMBLDC) motors ...
Liu Yang +5 more
doaj +1 more source