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利用金属和铁氧体薄片提升紧凑型EMI滤波器性能

Improving Performance of Compact EMI Filters by Using Metallic and Ferrite Sheets

语言:

中文摘要

在紧凑型电磁干扰(EMI)滤波器中,组件间的磁耦合是导致高频段(数百kHz至数MHz)传导发射抑制能力下降的主要原因。本文分析并对比了基于铜带(高导电性)和铁氧体薄片(高磁导率)的两种屏蔽策略,旨在优化功率变换器EMI滤波器的性能。

English Abstract

Magnetic coupling between components in compact electromagnetic interference filters is one of the main effects that undermine their ability to reduce conducted emissions of power converters at frequencies above several hundreds of kilohertz or a few megahertz. This article analyzes and compares the performance of two different shielding strategies based upon the use of copper bands (high-conducti...
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SunView 深度解读

随着阳光电源组串式逆变器和PowerTitan/PowerStack储能系统向高功率密度、小型化方向发展,EMI滤波器的设计难度显著增加。高频磁耦合干扰是制约产品电磁兼容性(EMC)达标的关键瓶颈。本文提出的金属与铁氧体屏蔽策略,可有效优化逆变器及PCS内部功率模块的布局设计,减少寄生参数影响。建议研发团队在下一代高频化产品设计中,引入该屏蔽技术以提升EMI滤波性能,从而缩减滤波器体积,进一步提升产品功率密度,同时降低因电磁干扰导致的系统运行风险。