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电力线滤波器薄膜电容器寄生自感与互感的计算

Calculation of Parasitic Self- and Mutual-Inductances of Thin-Film Capacitors for Power Line Filters

语言:

中文摘要

本文提出了一种简单且精确的方法,用于计算电磁干扰滤波器中紧密排列的薄膜电容器的自感与互感。通过考虑趋肤效应和邻近效应,将高频下电容器内部电流近似为带状电流,从而实现对寄生参数的有效建模。

English Abstract

This work presents a simple and accurate method for the calculation of both the self-inductance and the mutual inductance between thin-film capacitors, placed in close proximity in electromagnetic interference filters. From physical considerations regarding the impact of both skin and proximity effects, we approximate the currents flowing inside the capacitors at high frequencies by strip currents...
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SunView 深度解读

该研究对于阳光电源的核心产品线(如组串式逆变器、PowerTitan储能系统)具有重要的工程指导意义。在电力电子变换器中,EMI滤波器是保证电磁兼容性的关键,而薄膜电容器的寄生电感直接影响高频滤波性能及系统稳定性。通过精确计算寄生参数,研发团队可在设计阶段优化滤波器布局,减少高频谐振风险,提升逆变器及PCS的功率密度与可靠性。建议在iSolarCloud智能运维平台的故障诊断模型中,引入此类高频寄生参数分析,以提升对复杂电网环境下EMI问题的预判能力。