Abstract
As key influence factors on the aging of pulse metallized polypropylene film capacitors, the number of charge–discharge (from 2000 to 8000), temperature (from 40 °C to 100 °C), and electric field is studied in this article based on the extended Debye model. With the increase of the temperature <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${T}$ </tex-math></inline-formula> , the charging voltage <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${U}_{0}$ </tex-math></inline-formula> , and the number of charge–discharge <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${n}$ </tex-math></inline-formula> during aging, the parameters of the extended Debye model change, resulting in the increase of the time constant and the amount of polarization charge. The Maxwell–Wagner model is used to analyze the influence of aging on the parameters of the polarization model. The relationship between the polarization charge and temperature conforms to the Arrhenius law. The charge accumulation of the slow-polarized branch during charge–discharge aging was calculated using the Debye model.
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