Abstract
This article investigates the evolution of electrical properties of polyethylene terephthalate (PET) with thermal
aging. Electrical tests are performed within a wide range of frequencies in order to simulate the application conditions of insulating materials in inverter-fed machines. In particular, for the aging conditions considered, the real part of permittivity showed to be correlated with the concentration of the degradation species, investigated through FTIR. On the contrary, the dielectric breakdown at high frequencies showed to be independent from the corresponding values of the dissipation factor (tanδ). This behavior would imply that thermal runaway is not the principal phenomenon leading to the dielectric failure.
aging. Electrical tests are performed within a wide range of frequencies in order to simulate the application conditions of insulating materials in inverter-fed machines. In particular, for the aging conditions considered, the real part of permittivity showed to be correlated with the concentration of the degradation species, investigated through FTIR. On the contrary, the dielectric breakdown at high frequencies showed to be independent from the corresponding values of the dissipation factor (tanδ). This behavior would imply that thermal runaway is not the principal phenomenon leading to the dielectric failure.
| Originalsprog | Engelsk |
|---|---|
| Titel | 2023 IEEE Electrical Insulation Conference |
| Forlag | IEEE |
| Publikationsdato | 2023 |
| Artikelnummer | 10177223 |
| ISBN (Elektronisk) | 9781665493413 |
| DOI | |
| Status | Udgivet - 2023 |
| Begivenhed | 2023 IEEE Electrical Insulation Conference (EIC) - Quebec City, Canada Varighed: 18 jun. 2023 → 21 jun. 2023 |
Konference
| Konference | 2023 IEEE Electrical Insulation Conference (EIC) |
|---|---|
| Land/Område | Canada |
| By | Quebec City |
| Periode | 18/06/2023 → 21/06/2023 |
| Navn | IEEE Electrical Insulation Conference (EIC) |
|---|---|
| ISSN | 2576-6791 |