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Carter's factor calculation using domain transformations and the finite element method

Authors

  • Wesley Pacheco Calixto,

    Corresponding author
    1. Institute of Systems and Robotics, Electrical and Computer Engineering Department, University of Coimbra, Portugal
    • Electromagnetism and Electric Grounding Systems Nucleus Research and Development, Electrical Engineering Department, Federal University of Uberlandia – UFU, Brazil
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  • Bernardo Alvarenga,

    1. Electromagnetism and Electric Grounding Systems Nucleus Research and Development, Electrical Engineering Department, Federal University of Uberlandia – UFU, Brazil
    2. Electrical and Computer Engineering School, Federal University of Goias – UFG, Brazil
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  • A. Paulo Coimbra,

    1. Electromagnetism and Electric Grounding Systems Nucleus Research and Development, Electrical Engineering Department, Federal University of Uberlandia – UFU, Brazil
    2. Institute of Systems and Robotics, Electrical and Computer Engineering Department, University of Coimbra, Portugal
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  • Aylton Jose Alves,

    1. Electromagnetism and Electric Grounding Systems Nucleus Research and Development, Electrical Engineering Department, Federal University of Uberlandia – UFU, Brazil
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  • Luciano Martins Neto,

    1. Electromagnetism and Electric Grounding Systems Nucleus Research and Development, Electrical Engineering Department, Federal University of Uberlandia – UFU, Brazil
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  • Marcel Wu,

    1. Electromagnetism and Electric Grounding Systems Nucleus Research and Development, Electrical Engineering Department, Federal University of Uberlandia – UFU, Brazil
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  • Wander G. da Silva,

    1. Electrical and Computer Engineering School, Federal University of Goias – UFG, Brazil
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  • Edval Delbone

    1. Electromagnetism and Electric Grounding Systems Nucleus Research and Development, Electrical Engineering Department, Federal University of Uberlandia – UFU, Brazil
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W. P. Calixto, Institute of Systems and Robotics, Electrical and Computer Engineering School, Federal University of Goias, Brazil.

E-mail: wpcalixto@ieee.org

SUMMARY

The main purpose of this work is to present a methodology to calculate Carter's factor using the actual air-gap geometry, that is, without simplifications of the slot geometry. The methodology is based on the finite element method, and its results are compared with some traditional procedures used for Carter's factor calculation and also with a domain transformation technique. It is shown that the finite element method and the domain transformation methodologies present similar results, which are different from the results obtained with traditional procedures. Copyright © 2011 John Wiley & Sons, Ltd.

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