用于 SMPS 的集成滤波扼流圈,具有更强的 EMI 噪声抑制性能

IF 1.3 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Kaining Fu, Zhiyong Qiu, Wei Chen
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引用次数: 0

摘要

随着 EMI 滤波器的广泛应用,提高功率密度的方法已成为开关电源的主要关注点。以前有许多研究都是为了提高扼流圈的 EMI 滤波性能。本文研究了一种集成扼流圈结构,它能最大限度地减少漏磁通量,增大 DM 电感,提高 DM 噪声抑制性能。与分立式 EMI 滤波器电感器相比,所提出的叠层扼流圈方案可通过组合使用不同类型的环形磁芯,将 CM 和 DM 扼流圈集成到环形磁芯中。建议的电感器能表现出更好的直流磁饱和特性。有限元法(FEM)模拟、阻抗测量、插入损耗和传导 EMI 噪声频谱(150 kHz-30 MHz)用于验证理论分析和所提等效磁阻模型的准确性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Integrated filtering choke for SMPS with enhanced EMI noise suppression performance

Integrated filtering choke for SMPS with enhanced EMI noise suppression performance

With the widespread application of EMI filters, a method to improve power density has become a main concern in switch mode power supplies. Many previous works have been done for improving the EMI filtering performance of chokes. This article investigates an integrated choke structure that can minimize the leakage magnetic flux, enlarge the DM inductance, and improve the DM noise suppression performance. Compared to discrete EMI filter inductors, the proposed stacked choke scheme can integrate CM and DM chokes into toroidal cores by applying a combination of different types of toroidal cores. The proposed inductor can exhibit better DC magnetic saturation characteristic. Finite Element Method (FEM) simulations, impedance measurement, insertion loss and conducted EMI noise spectrums (150 kHz–30 MHz) are used to validate the accuracy of the theoretical analysis and the proposed equivalent magnetic reluctance models.

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来源期刊
Journal of Power Electronics
Journal of Power Electronics 工程技术-工程:电子与电气
CiteScore
2.30
自引率
21.40%
发文量
195
审稿时长
3.6 months
期刊介绍: The scope of Journal of Power Electronics includes all issues in the field of Power Electronics. Included are techniques for power converters, adjustable speed drives, renewable energy, power quality and utility applications, analysis, modeling and control, power devices and components, power electronics education, and other application.
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