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Effect of Air Pressure on the Aging and Lifetime of Electrical Insulation in Winding Wires

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  • Piotr Pająk

    (Department of Electrical and Power Engineering, AGH University of Krakow, Al. Mickiewicza 30, 30-059 Kraków, Poland)

  • Józef Roehrich

    (Department of Electrical and Power Engineering, AGH University of Krakow, Al. Mickiewicza 30, 30-059 Kraków, Poland)

  • Mariusz Benesz

    (Department of Electrical and Power Engineering, AGH University of Krakow, Al. Mickiewicza 30, 30-059 Kraków, Poland)

Abstract

This paper presents the issues related to aging studies of electrical insulation in winding wires, which are widely used in electrical machines. Insulating materials in electrical machines are subjected to various stress factors, particularly electrical stress. The proper design of such insulation systems requires an understanding of the behavior of individual system components under specific operating conditions. This knowledge enables the optimization of insulation design, which can contribute to extending the operational lifespan of electrical machines. In this study, the results of experimental investigations on twisted-pair winding wires with different geometric dimensions, subjected to electrical stress (a square voltage waveform in the kilohertz frequency range) under different pressure conditions, are presented. The experimental research is supplemented by simulation-based calculations of the electric field intensity in the examined twisted-pair winding wire samples.

Suggested Citation

  • Piotr Pająk & Józef Roehrich & Mariusz Benesz, 2025. "Effect of Air Pressure on the Aging and Lifetime of Electrical Insulation in Winding Wires," Energies, MDPI, vol. 18(7), pages 1-10, March.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:7:p:1595-:d:1618470
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