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IEEE Transactions on Magnetics, 1974
Measurements of total power loss and domain-wall spacing have been made on individual grains in polycrystalline specimens of commercial grain-oriented 3% silicon-iron material. The loss-per-cycle against frequency characteristic of a grain is found to consist of discrete linear portions, which correspond to different domain-wall spacings. These changes
M. Sharp, K. Overshott
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Measurements of total power loss and domain-wall spacing have been made on individual grains in polycrystalline specimens of commercial grain-oriented 3% silicon-iron material. The loss-per-cycle against frequency characteristic of a grain is found to consist of discrete linear portions, which correspond to different domain-wall spacings. These changes
M. Sharp, K. Overshott
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Analysis of iron losses in induction motor with an improved iron-loss model
2014 IEEE Conference and Expo Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014In order to study iron loss distribution characteristics in stator and motor of induction motor, an improved iron-loss model with higher accuracy is proposed based on time-stepping finite elements. In Section Two,various iron loss formulaes are compared. followed by an miproved iron-loss model.
null Guoqing Yang +2 more
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Verification of Iron Loss Calculation Method using a High-Precision Iron Loss Analyzer
IEEJ Transactions on Industry Applications, 2013SUMMARYBecause of the improved performance of power devices, the volume of the ac filter inductors used in high‐frequency PWM inverters has been reduced. However, the temperature rise in the filter inductor due to this miniaturization has become more pronounced.
Toshihisa Shimizu +3 more
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Iron loss in machines with powdered iron stators
IEEE International Electric Machines and Drives Conference. IEMDC'99. Proceedings (Cat. No.99EX272), 2003This paper describes iron loss measurements in a permanent magnet servomotor, which has a stator constructed with soft magnetic composites (SMCs). It is shown that whilst the SMC has significantly greater iron loss density than silicon iron steel, it has many other advantages. The SMC machine is shown to outperform its conventional laminated equivalent.
A.G. Jack, B.C. Mecrow, P.G. Dickinson
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Annual Iron Loss Associated with Hemodialysis
American Journal of Nephrology, 2016<b><i>Background:</i></b> In order to keep up the optimal iron status in chronic hemodialysis patients, it is important to know how much iron is lost due to hemodialysis. Residual blood associated with the hemodialysis procedure together with blood sampling inevitably causes the loss of iron in chronic hemodialysis patients ...
Tatsuo, Tsukamoto +4 more
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The determination of menstrual iron loss
Biochemical Medicine, 1970Abstract A procedure involving dry ashing and spectrophotometry with thioglycollic acid is described for the determination of iron loss during menstruation. In its development the nonvolatility of iron was checked and wet-oxidation and dry-ashing methods of destroying organic matter compared with special reference to citrated whole blood.
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Armature Iron Losses in Series Motors
Transactions of the American Institute of Electrical Engineers, 1949IN AN A-C series motor, the flux pulsation in the field is predominantly at line frequency. The field iron loss can be computed easily and represented by a loss component in the magnetizing current. However, due to the rotation of the armature, the gap flux is rotating relative to the armature, as well as pulsating.
Sheldon S. L. Chang, J. H. Karr
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2015 IEEE International Electric Machines & Drives Conference (IEMDC), 2015
This paper addresses the influence of the estimation of hysteresis, eddy current and excess loss coefficients on the prediction of the overall iron losses in traction motors. Two standard iron loss models (according to Bertotti and Jordan) are presented and it is examined how the determination of the corresponding loss coefficients is effecting the ...
Jonathan Juergens +3 more
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This paper addresses the influence of the estimation of hysteresis, eddy current and excess loss coefficients on the prediction of the overall iron losses in traction motors. Two standard iron loss models (according to Bertotti and Jordan) are presented and it is examined how the determination of the corresponding loss coefficients is effecting the ...
Jonathan Juergens +3 more
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Iron losses in processing tailings
Journal of Mining Science, 2005For ferruginous quartzite of the Mikhailovsk deposit, the features of mineral composition, iron occurrence, granulometric composition, and opening of phases of stage and total tailings of processing are considered. Extraction of hematite from tailings using combined concentration schemes is one of the variants of complex utilization of mineral source ...
T. N. Gzogyan +3 more
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Iron losses in turbogenerator teeth
Journal of Applied Physics, 1982The flux density was measured in a typical tooth of a 500-MV A synchronous generator. Peak flux densities of 14.3, 16.9, and 21.2 kG were observed in an open circuit test at 80%, 100%, and 125% of rated voltage. The search coil voltage waveforms were rich in odd harmonics tending toward a square wave.
F. J. Young, H. L. Schenk
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