Results 281 to 290 of about 768,970 (347)
Some of the next articles are maybe not open access.
Eddy Current Losses in Armature Conductors
Transactions of the American Institute of Electrical Engineers, 1920This paper is an extension to the author's paper in Vo. XXXIX Pages 997 to 1047 on Eddy Current Losses in Armature Conductors. In this present paper additional formulas are given for the cases where transposed coils are used and also methods given for quickly estimating the increased loss due to eddy currents.
openaire +1 more source
Eddy current and hysteresis losses in ferromagnetic media
IEEE Transactions on Magnetics, 1998This paper is a contribution to the evaluation of losses in ferromagnetic media, due to eddy currents and magnetic hysteresis, the field source being the time harmonic induced e.m.f. The fundamental field equations are solved numerically by using a finite element formulation, corresponding to the space discretization, and a second order trapezoidal ...
V.M. Machado, A.L. Ribeiro
openaire +1 more source
Eddy-current losses in saturated cylinders
IEEE Transactions on Communication and Electronics, 1964This paper discusses the process of magnetization and the eddy-current losses in saturated cylinders subjected to a sinusoidal magnetic field. Maxwell's equations are solved in cylindrical co-ordinates for an assumed magnetization curve B = B s sign H.
B. Béland, J. Robert
openaire +1 more source
IEEE transactions on magnetics, 2019
The temperature rise of the rotor caused by harmonic eddy-current loss constrains the performances of high-speed permanent magnet (PM) motors. Excessive temperature rise can even result in irreversible demagnetization in the PM.
Zhongming Zhang +5 more
semanticscholar +1 more source
The temperature rise of the rotor caused by harmonic eddy-current loss constrains the performances of high-speed permanent magnet (PM) motors. Excessive temperature rise can even result in irreversible demagnetization in the PM.
Zhongming Zhang +5 more
semanticscholar +1 more source
Eddy current iron losses in axially laminated brushless motors
IEE Proceedings - Electric Power Applications, 1995The paper presents an analytical procedure for the evaluation of iron losses produced by eddy currents in the rotor sheets of axially laminated VR motors. These losses cannot be neglected especially in inverter fed closed loop operations. To simplify the eddy currents computation, the magnetic field in iron sheets is obtained by separately considering ...
MARIGNETTI, Fabrizio +3 more
openaire +4 more sources
Accurate Calculation of Eddy Current Loss in Litz-Wired High-Frequency Transformer Windings
IEEE transactions on magnetics, 2018The winding power loss of a high frequency transformer is strongly influenced by the high frequency eddy current skin and proximity effects. The litz-wire can reduce effectively the eddy current effects.
Zhuoyuan Liu, Jianguo Zhu, Lihua Zhu
semanticscholar +2 more sources
IEEE transactions on energy conversion, 2019
Low-order harmonic currents in high-speed permanent magnet brushless dc (PM BLDC) motors cause large rotor eddy-current loss, resulting in high temperature rise and even overheating in the rotors, thus their application in the field of high-speed drive ...
Zhongming Zhang +5 more
semanticscholar +1 more source
Low-order harmonic currents in high-speed permanent magnet brushless dc (PM BLDC) motors cause large rotor eddy-current loss, resulting in high temperature rise and even overheating in the rotors, thus their application in the field of high-speed drive ...
Zhongming Zhang +5 more
semanticscholar +1 more source
Eddy-current losses in unbonded tubes
Proceedings of the Institution of Electrical Engineers, 1975A series solution for the eddy-current loss in thin isolated cable sheaths, busbar enclosures, water cooling pipes etc. has been developed using Carter's method. The theory, which takes into account the magnetic field set up by the tube eddy currents themselves, can be applied to any system where the primary conductor current within a tube is coaxial ...
openaire +1 more source
Large signal eddy current losses beyond 100kHz
IEEE Transactions on Magnetics, 1984Eddy current losses under large flux excitation in Mn-Zn ferrite cores and both polycrystalline and amorphous metallic cape cores of thickness 4μm to 28μm are measured in the frequency range up to 1MHz. Beyond 100kHz, the complex behaviors of magnetization in metallic cores as seen in the lower frequency range disappear and eddy current losses are only
null Yo Sakaki, T. Sato
openaire +1 more source
Eddy-Current Losses in Rectifier Transformers
IEEE Transactions on Power Apparatus and Systems, 1970Two methods are developed for evaluating the eddy- current losses occurring in a rectifier transformer during operation, i.e., when carrying pulsating currents. The first is based on the analysis of the whole waveshape; the second starts from the harmonic composition of current curves.
openaire +1 more source