Electrical Treeing and Partial Discharges in Double Layer Printed Circuit Board

Jianhong Song, Zepeng Lv, Kai Wu, Zengbiao Huang, Yuan Li, Qi Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

With the development of power devices, the demand to improve insulation performance of printed circuit boards (PCBs) is increasing. PCB faces great challenges in its insulation failure caused by long-term ageing when subject to intensive electric fields. It is observed that failures are commonly detected between layers. Therefore, this paper designed and made V-shaped double layer samples to test the partial discharge and electrical tree growth. Based on the method of pulse sequence analysis and phase-revolved partial discharge pattern, the insulation deterioration in layers is analyzed. It was found that the electrical tree grew into branched electrical trees. Based on the PSA, the growth of tree conforms the characteristic of non-conductive electrical tree. The partial discharges inception and extinction voltage decrease at first as the tree grows. But as the electric tree grows, their trend becomes very complex. The apparent charge followed almost linear relationship with the maximum length of electrical tree in the first 5 minutes.

Original languageEnglish
Title of host publicationProceedings of 2023 International Symposium on Electrical Insulating Materials, ISEIM 2023
PublisherIEEE
Pages265-268
Number of pages4
ISBN (Electronic)9784886864376
DOIs
Publication statusPublished - 5 Dec 2023
Event2023 International Symposium on Electrical Insulating Materials, ISEIM 2023 - Matsue City, Japan
Duration: 24 Sept 202328 Sept 2023

Publication series

NameProceedings of the International Symposium on Electrical Insulating Materials

Conference

Conference2023 International Symposium on Electrical Insulating Materials, ISEIM 2023
Country/TerritoryJapan
CityMatsue City
Period24/09/2328/09/23

Keywords

  • electrical tree
  • layer insulation
  • partial discharge
  • printed circuit board

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