Harbin Engineering UniversityIntroduction to Electromagnetic Compatibility Introduction to Electromagnetic CompatibilityHarbin Engineering UniversityEMI电源滤波器的设计过程:EMI 滤波器的设计大致可以分为以下几个步骤:(1)预估或者测量干扰的噪声频谱值,包括差模和共模干扰各自的频谱值。(分离共模和差模干扰)(2)确定噪声源阻抗和噪声的负载阻抗,根据它们选择滤波器结构。(3)把实际的干扰发射值与EMC 标准的极限发射值对比,确定EMI 滤波器需要多大的插入损耗。(4)根据插入损耗确定EMI 滤波器元件的参数。 Introduction to Electromagnetic CompatibilityHarbin Engineering University?(5)调整EMI 滤波器的高频参数,这是因为滤波器的高频寄生参数会在一定程度上腐化滤波器的高频性能,导致绝大多数EMI 滤波器的设计在实际中不能完全满足高频衰减要求。 Harbin Engineering UniversityIntroduction to Electromagnetic Compatibility Introduction to Electromagnetic CompatibilityHarbin Engineering University Introduction to Electromagnetic CompatibilityHarbin Engineering University Harbin Engineering UniversityIntroduction to Electromagnetic Compatibility
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Introduction to Electromagnetic CompatibilityHarbin Engineering University
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Introduction to Electromagnetic CompatibilityHarbin Engineering University