Temperature rise is one of the major causes for all-film pulsed capacitor (AFPC) failure under high repetitive high-voltage pulse discharge operations. To study the thermal characteristics, a thermal simulation model is established. In this model, the actual operation conditions of capacitors are applied. The practical internal structure and heat production transfer of the AFPC are considered. The validation of the model is proved by the simulation and the experimental results. Based on the finite element method (FEM), the overall temperature field distribution of the AFPC, and the mathematical model between discharge voltage, frequency and temperature rise can be calculated. This model is capable of evaluating the temperature rise characteristics of an AFPC in repetitive high-voltage pulse discharge and can provide certain instructive suggestions for the safe operation and the optimal design of AFPC.

中文翻译：

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全膜脉冲电容器在重复脉冲放电应用中的热特性

在高重复性高压脉冲放电操作下，温升是全膜脉冲电容器 (AFPC) 失效的主要原因之一。为了研究热特性，建立了热仿真模型。在该模型中，应用了电容器的实际运行条件。考虑了 AFPC 的实际内部结构和产热传递。仿真和实验结果证明了模型的有效性。基于有限元法（FEM），可以计算出AFPC的整体温度场分布，以及放电电压、频率和温升之间的数学模型。