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

Piotr Pająk, Józef Roehrich () and Mariusz Benesz
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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

Energies, 2025, vol. 18, issue 7, 1-10

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.

Keywords: twisted pair; electrical insulation; lifetime estimation; Weibull distribution; electrical strength; winding wire (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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