Abstract
A multi-breakdown measurement method for large-area
dielectric breakdown characterization of polymer films is
presented and evaluated. Based on the self-healing
breakdown capability of metalized film, large amount of
breakdown data can be obtained from a relatively large
total film area, thus enabling the execution of detailed
breakdown performance analysis. The studied films include
non-metalized laboratoryscale, pilot-scale and commercial
capacitor-grade bi-axially oriented polypropylene films
in the thickness range of 14-25 ?m. With the active
measurement area of 81 cm2 per sample, breakdown
distributions covering total film areas of 486-972 cm2
are presented. Various aspects encompassing the sample
film preparation, measurement procedure, breakdown
progression, discharge event characterization, breakdown
field determination, data validation and statistical
analysis are discussed. Comparative small-area breakdown
measurements were performed in order to study the
relationship between the large-area multi-breakdown
measurement method and a conventional small-area (1 cm2)
manual breakdown measurement method. Implications of the
areadependence and the applicability of the Weibull
area-scaling are also discussed.
| Original language | English |
|---|---|
| Pages (from-to) | 689-700 |
| Journal | IEEE Transactions on Dielectrics and Electrical Insulation |
| Volume | 22 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 2015 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- Dielectric breakdown
- Weibull distribution
- area-dependence
- large-area breakdown performance
- self-healing
- statistical analysis