Results 291 to 300 of about 9,346,198 (349)

Design of CM Inductor Based on Core Loss for Radiated EMI Reduction in Power Converters

Applied Power Electronics Conference, 2019
In power converters, common mode (CM) noise can radiate to cause radiated electromagnetic interference (EMI). Resistive, inductive and capacitive parts of the CM inductors can interact with the antenna to induce damping effect or additional resonance ...
Juntao Yao, Yiming Li, Hui Zhao, Shuo Wang   +3 more
semanticscholar   +1 more source

Comparative Analysis of Magnetic Core Loss Measurement Methods with Arbitrary Excitations

European Conference on Cognitive Ergonomics, 2019
Magnetic cores are essentially significant in high frequency switching transformers. The core loss is an important characteristic parameter of the switching transformer modeling, loss estimation and thermal design, etc.
Zhedong Ma, Juntao Yao, Yiming Li, Shuo Wang   +3 more
semanticscholar   +1 more source

Comparative Analysis of Core Loss Calculation Methods for Magnetic Materials Under Nonsinusoidal Excitations

IEEE transactions on magnetics, 2018
Magnetic components in power electronic equipment usually suffer from nonsinusoidal excitations. In this paper, a brief description about the existing core loss calculation methods for nonsinusoidal excitations is given.
Shuaichao Yue, Yongjian Li, Qingxin Yang, Xinran Yu, Changgeng Zhang   +4 more
semanticscholar   +1 more source

Squirrel-cage induction-motor core losses

Journal of the A.I.E.E., 1925
An experimental method is presented for segregating the various no-load losses of a squirrel-cage induction motor. It is shown that for insulated rotor bars the losses consist principally of stator fundamental-frequency losses, rotor surface losses and eddy-current losses in the rotor bars due to radial and tangential slot-leakage fluxes in the rotor ...
openaire   +1 more source

Research of Harmonic Effects on Core Loss in Soft Magnetic Composite Materials

IEEE transactions on magnetics, 2019
A magnetic properties measurement system with the frequency-domain feedback control method is developed in this paper. The system can generate non-sinusoidal waveforms consisting of harmonics with variable orders, contents, and phase angles.
Xinran Yu, Yongjian Li, Qingxin Yang, Changgeng Zhang, Yang Liu, Xuehai Gong   +5 more
semanticscholar   +1 more source

Mathematical descriptions of core losses

Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics, 1953
This paper presents results so far achieved by the writers in endeavoring to gain an understanding of the factors controlling a-c core losses in modern magnetic materials. Losses have been measured on a number of cores over a range of frequencies and at flux densities in the middle portions of the magnetization curves.
J. W. Hale, F. R. Richardson
openaire   +1 more source

Transient Core-Loss Simulation for Ferrites With Nonuniform Field in SPICE

IEEE transactions on power electronics, 2019
A methodology to develop a subcircuit model for core loss simulation in LTspice is presented. The subcircuit implements the dynamic core loss model used in the transient solver of finite-element analysis (FEA) in order to provide equivalent results in ...
Han Cui, K. Ngo
semanticscholar   +1 more source

Deconvolution of core loss electron energy loss spectra

2009
Experimental electron energy loss spectra (EELS) are related to inelastic scattering events in the sample by the so called single scattering distribution S(E) [1] (the differential cross section after integration in the detector acceptance angle). The relationship between the experimental spectrum and its S(E) is complicated because of several effects,
G. Bertoni, J. Verbeeck
openaire   +1 more source

New Magnetic Core Loss Comparator

Journal of Applied Physics, 1958
A new method has been developed for the rapid measurement of magnetic flux density and power loss in single sheet steel specimens. In use the sheet specimen is inserted into an exciting unit which generates an ac magnetomotive force to provide the required flux density.
R. E. Tompkins, L. H. Stauffer, A. Kaplan   +2 more
openaire   +1 more source

Apparent core losses and core losses in five-limb amorphous transformer of 160 kVA

IEEE Transactions on Magnetics, 1998
Significant modifications of the shape of magnetic flux in columns and yokes were observed in the magnetic circuit of four amorphous cores used in a 3-phase transformer. The magnetic losses measured experimentally were significantly higher than the ones calculated theoretically.
S. Sieradzki, R. Rygal, M. Soinski
openaire   +1 more source