Results 211 to 220 of about 400,516 (254)

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), 2014
In 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, null Zongze Cui, null Liwei Song   +2 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), 2003
This 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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The determination of menstrual iron loss

Biochemical Medicine, 1970
Abstract 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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Iron losses in turbogenerator teeth

Journal of Applied Physics, 1982
The 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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Iron losses in processing tailings

Journal of Mining Science, 2005
For 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, S. L. Gubin, S. R. Gzogyan, N. D. Mel’nikova   +3 more
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Iron Loss and Iron Requirement

1983
Measurement 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 direct-current machines

Proceedings of the American Institute of Electrical Engineers, 1916
The 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 Losses in Turbine Generators

Transactions of the American Institute of Electrical Engineers, 1929
In large turbine generators there is no convenient method for determining the iron losses under load. It is the purpose of this paper to show, analytically, the factors influencing the change in iron loss with load. While very definite results are given for a simplified machine, it is not recommnended at this time that any change be made in the A. I. E.
C. M. Laffoon, J. F. Calvert
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Iron losses in d.c. machines

Journal of the Institution of Electrical Engineers, 1924
In Section I the iron loss in six d.c. machines with undistorted flux has been analysed to determine:? (a) The effect of high flux-density upon the hysteresis loss. (b) The hysteresis and eddy-current exponents over a wide range of flux density. (c) The ranges of frequency and of flux density over which the total iron loss can be represented by an ...
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IRON LOSS AT MENSTRUATION

BJOG: An International Journal of Obstetrics & Gynaecology, 1964
F E, HYTTEN, G A, CHEYNE, A I, KLOPPER
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