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33.Magnetics by John G. Webster (Editor)

By John G. Webster (Editor)

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In both joints the flux remains in the rolling direction of the laminations over most of the area, apart from the region containing the elliptical loci, where rotating flux density occurs. It should be remembered that odd harmonics (up to around the 9th for sinusoidal voltages but much higher for pulsed conditions), which all contribute to the losses, will be superimposed on this distribution. Figure 14 shows the localized loss distribution in one of the cores. The peaks correspond to the regions where the rotational flux occurs and regions where high interlamina flux is present (19).

Meydan New aspects of rotating field and flux measurement in electrical steel, J. Magn. Mag. , 112: 135–138, 1992. 13. A. J. Moses Effect of stresses on magnetic properties of siliconiron laminations. J. Mat. , 9: 217–222, 1974. 14. A. J. Moses P. S. Phillips Some effect of stress in Goss-oriented silicon iron, IEEE Trans. , 14: 353–355, 1978. 15. D. A. Ball H. O. Lorch An improved thermometric method of measuring local power dissipation, J. Sci. , 42: 90–93, 1965. 16. J. J. Dalton J. Liu A. J. Moses D.

J. A, 5): 233–245, 1990. 5. T. Nozawa M. Mizogami H. Mogi Y. Matsuo Magnetic properties and dynamic domain behaviour in grain-oriented 3% SiFe, IEEE Trans. , 32: 572–589, 1996. 6. J. W. Shilling G. L. Houze Magnetic properties and domain structures in grain-oriented 3% Si-Fe, IEEE Trans. , M10: 195–223, 1974. 7. F. Brailsford Physical Principles of Magnetism, London: Van Nostrand, 1966. Eddy Current Losses 8. A. J. Moses Development of alternative magnetic core materials and incentives for their use, J.

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