A DETERMINATION OF THE FLUX DENSITY IN CORE OF DISTRIBUTION TRANSFORMERS, WHAT BUILT WITH THE COMMON USING OF GRAIN AND NON GRAIN ORIENTED MAGNETIC STEELS

Authors

  • I. V. Pentegov Paton Electric Welding Institute of National Academy of Sciences of Ukraine, Ukraine
  • S. V. Rymar Paton Electric Welding Institute of National Academy of Sciences of Ukraine, Ukraine
  • M. I. Levin MIRUS International Inc., Canada
  • A. V. Lavreniuk MIRUS International Inc., Canada

DOI:

https://doi.org/10.20998/2074-272X.2015.6.05

Keywords:

distribution transformer, magnetic core, grain oriented steel (GO), non grain oriented steel (NGO), flux density, no load losses, high efficiency

Abstract

Purpose. The development of calculation method to determinate the flux densities in different parts of the magnetic cores of distribution transformers, what built from different types magnetic steel (mixed core). Methodology. The method is based on the scientific positions of Theoretical Electrical Engineering – the theory of the electromagnetic field in nonlinear mediums to determine the distribution of magnetic flux in mixed core of transformer, what are using different types of steel what have the different magnetic properties. Results. The developed method gives possible to make calculation of the flux density and influence of skin effect in different parts of the magnetic cores of distribution transformer, where are used mix of grain oriented (GO) and non grain oriented (NGO) steels. Was determinate the general basic conditions for the calculation of flux density in the laminations from grain and non grain oriented steels of the magnetic core: the strength of magnetic field for the laminations of particular part of mixed core is the same; the sum of the magnetic fluxes in GO and NGO steels in particular part of mixed core is equal with the designed magnetic flux in this part of mixed core. Discover, the magnetic flux in mixed core of the transformer has specific distribution between magnetic steels. The flux density is higher in laminations from GO steel and smaller in laminations from the NGO steel. That is happened because for magnetic flux is easier pass through laminations from GO steel, what has better magnetic conductance than laminations from NGO steel. Originality. The common using of different types of magnetic steels in cores for distribution transformers gives possibility to make design of transformer with low level of no load losses, high efficiency and with optimal cost. Practical value. The determination of the flux density in different parts of magnetic core with GO and NGO steels gives possibility make accurate calculation of no load losses and magnetizing current of the transformer.

Author Biographies

I. V. Pentegov, Paton Electric Welding Institute of National Academy of Sciences of Ukraine

11, Bozhenko Str., Kiev, 03680, Ukraine

S. V. Rymar, Paton Electric Welding Institute of National Academy of Sciences of Ukraine

11, Bozhenko Str., Kiev, 03680, Ukraine

M. I. Levin, MIRUS International Inc.

67, Sunnycrest Rd., Toronto, Canada, M2R 1V4

A. V. Lavreniuk, MIRUS International Inc.

31, Sun Pac Blvd., Brampton, Ontario, Canada, L6S 5P6

References

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Published

2015-11-26

How to Cite

Pentegov, I. V., Rymar, S. V., Levin, M. I., & Lavreniuk, A. V. (2015). A DETERMINATION OF THE FLUX DENSITY IN CORE OF DISTRIBUTION TRANSFORMERS, WHAT BUILT WITH THE COMMON USING OF GRAIN AND NON GRAIN ORIENTED MAGNETIC STEELS. Electrical Engineering & Electromechanics, (6), 31–35. https://doi.org/10.20998/2074-272X.2015.6.05

Issue

No. 6 (2015)

Section

Electrical Machines and Apparatus

License

Copyright (c) 2015 I. V. Pentegov, S. V. Rymar, Michael I. Levin, Andrii V. Lavreniuk

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