In this paper, a 3-D evaluation method for internal charging in dielectrics is established and verified by experimental data. The effects of the grounding method and the operating voltage on the internal electric field of polyimide are studied. The results show that the grounding method determines the grounding area and the maximum transmission distance of the deposited charge, increasing the grounding area and reducing the transmission distance can effectively reduce the internal electric field. In addition, when the operating voltage increases from 100 to 5000 V, the maximum electric field decreases gradually in case B (Grounded-Vs) and increases gradually in case D (Vs-Grounded). If the working voltage needs to be increased, the Grounded-Vs mode seems to be a good choice. When increasing the operating voltage, the key is to evaluate the influence of the external electric field on the transfer performance of the deposited charge.

中文翻译：

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工作电压和接地方式对聚酰亚胺内部充电特性的影响


本文建立了电介质内部充电的三维评估方法并通过实验数据进行了验证。研究了接地方式和工作电压对聚酰亚胺内部电场的影响。结果表明，接地方式决定了接地面积和沉积电荷的最大传输距离，增加接地面积和减少传输距离可以有效降低内部电场。此外，当工作电压从100 V增加到5000 V时，情况B（接地-Vs）的最大电场逐渐减小，情况D（Vs-接地）的最大电场逐渐增大。如果需要提高工作电压，Grounded-Vs 模式似乎是一个不错的选择。当提高工作电压时，关键是评估外部电场对沉积电荷传输性能的影响。