유한요소법에 의한 ZnO 바리스터 동작 시 발생되는 열폭주 현상 해석Analysis of Thermal Runaway Phenomenon Caused by ZnO Varistor Operation Using Finite Element Method
- Other Titles
- Analysis of Thermal Runaway Phenomenon Caused by ZnO Varistor Operation Using Finite Element Method
- Authors
- 장경욱
- Issue Date
- Jul-2022
- Publisher
- 한국전기전자재료학회
- Keywords
- ZnO varistor; Surge arrestor; Comsol; FEM; ZnO varistor design
- Citation
- 전기전자재료학회논문지, v.35, no.4, pp.372 - 376
- Journal Title
- 전기전자재료학회논문지
- Volume
- 35
- Number
- 4
- Start Page
- 372
- End Page
- 376
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/84873
- ISSN
- 1226-7945
- Abstract
- Since the ZnO varistor is a semiconductor device, the internal thermal distribution during the varistor operation is recognized as an important factor in the performance and deterioration of the varistor. For an optimal varistor structure design, the thermal runaway phenomenon during the varistor operation was interpreted using the Comsol 5.2 analysis program by a finite element analysis. The maximum temperature of the center measured in the cross section of the ZnO varistor was confirmed to increase as the temperature moved from the lower electrode to the center towards the upper electrode up to 572.6 K. The electrodes are thinned so that the influence of the Schottky barrier is not great. The heat gradient balance is determined to be improved when the electrode of the hybrid form is introduced. The thickness, density, pore distribution, impurity uniformity, and particle size of the ZnO varistor are required, and it is determined that the pyrolysis gradient will be improved regardless of the electrode thickness. When these results are applied to design the ZnO varistor, the optimal structure of the ZnO varistor can be obtained.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - IT융합대학 > 전기공학과 > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/84873)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.