Effects of bipolar repetitive square wave voltage parameters on electrical tree characteristics of epoxy resin
Effects of bipolar repetitive square wave voltage parameters on electrical tree characteristics of epoxy resin
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DOI：
10.1016/j.polymertesting.2021.107371
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发表时间：
2021-10-04
期刊：
影响因子：
5.1
通讯作者：
Javed, Muhammad Sufyan
中科院分区：
文献类型：
--
作者：
Wang, Peng;Chen, Yiwen;Javed, Muhammad Sufyan
本文研究了环氧树脂的电树生长。对环氧树脂施加重复双极方波电压，研究了不同参数的上升时间、频率和占空比。重复平方电压的频率范围为50hz ~ 20khz，上升时间范围为70ns ~ 620ns，占空比范围为5% ~ 90%。结果表明，在高电压频率的影响下，电树的启动速度更快，上升时间更短。此外，在上升时间较短且占空比大于10%的情况下，电树生长更快。上升时间主要影响电树的起始过程。相比之下，对电树起始和生长的主要影响归因于施加频率的影响。
This work investigates the electrical tree growth of epoxy resins. Repetitive bipolar square wave voltage is applied to the epoxy resins and different parameters rise time, frequency, and duty cycle are studied. The frequency range of repetitive square voltage ranges from 50 Hz to 20 kHz, the rise time ranges from 70 ns to 620 ns, and the duty cycle ranges from 5 to 90%. The results reveal that the initiation of the electrical tree is more rapid under the influence of high voltage frequency having a shorter rise time. Moreover, the electrical tree growth is faster under the impact of a shorter rise time with a duty cycle greater than 10%. The rise time mainly affects the initiation process of electrical trees. In comparison, the primary influence on the electrical tree initiation and its growth is attributed to the impact of the frequency applied.