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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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Accuracy of iron loss calculation in electrical machines by using different iron loss models
Journal of Magnetism and Magnetic Materials, 2003Abstract The paper presents iron loss calculation in rotational electrical machines by using different iron loss models. The accuracy of each iron loss model was determined by the comparison of measured and calculated iron losses in the case of distorted elliptically rotating flux density waveforms, generated inside the fully 2D waveform controlled ...
B. Štumberger +5 more
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Accuracy of iron loss estimation in induction motors by using different iron loss models
Journal of Magnetism and Magnetic Materials, 2004Abstract The paper presents iron loss estimation in a three-phase induction motor by using different iron loss models for the posterior iron loss calculation. The iron losses were determined by using modeled properties of used electrical steel and calculated distribution of magnetic induction B (t ) in all parts of the motor by using 2D ...
B. Štumberger +4 more
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Iron Loss and Iron Requirement
1983Measurement of iron loss is technically difficult. Chemical iron balances require meticulous technique to avoid contamination, and they do not allow the differentiation between nonabsorbed iron and iron excreted through the gastrointestinal tract. Isotope techniques require knowledge of the distribution of the radioiron within the organism and the ...
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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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2019
Since inductors used in power electronics circuits are magnetized under completely different conditions from sinusoidal alternating voltage/current, the manner of occurrence of iron loss is often greatly different. In this chapter, we clarify the difference between the magnetizing modes of the transformer and inductor used in the power electronics ...
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Since inductors used in power electronics circuits are magnetized under completely different conditions from sinusoidal alternating voltage/current, the manner of occurrence of iron loss is often greatly different. In this chapter, we clarify the difference between the magnetizing modes of the transformer and inductor used in the power electronics ...
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IRON LOSSES AND IRON REQUIREMENTS
The Lancet, 1971A L, Cochrane, P C, Elwood
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Iron losses in direct-current machines
Proceedings of the American Institute of Electrical Engineers, 1916The term iron loss, as used in connection with rotating machinery, is shown to cover a large number of losses, some of which actually do not lie in the iron itself. The term core loss should be used except when the losses are actually located in the iron itself.
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Iron Deficiency and Hearing Loss
ORL, 2010Cochlear changes were studied in 141 growing rats raised on a basic iron-deficient diet for 7–100 days; 130 rats served as normal or chronic anemia controls. Electrophysiological findings showed that the incidence of an auditory threshold elevation of more than 15 dB was 31.85 % in the iron-deficient rats, but it was unchanged in all the control ...
Ai-Hua Sun +5 more
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