| Autor: |
Qibin Zhou, Hongxiang Yang, Xin Huang, Manyu Wang, Xin Ren |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
High Voltage, Vol 6, Iss 4, Pp 711-717 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2397-7264 |
| DOI: |
10.1049/hve2.12072 |
| Popis: |
Abstract The electrical and thermal characteristics of metal oxide varistor (MOV) are essential for the study of MOV performance and degradation. This paper provides a modelling method of MOV to simulate its microstructure geometry with the Voronoi network and derive the electrical functions on the grain boundaries. A series of discrete data to describe the resistance‐voltage (R–V) characteristics of MOV from experiments is applied to the proposed model. Through 8/20 μs surge current experiments, the electrical conductivity of MOV is determined to achieve the simulation of the clamping voltage. With this model, the current distribution and temperature distribution over a MOV sample are simulated and analysed by the finite element method (FEM). The simulation results show good agreement with the experimental measurement and inherent feature of MOV. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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