Novel Measurement Procedure for Switched-Mode Power Supply Modal Impedances

被引：9

作者：

Mazzola, Enrico ^{[1
,2
]}

Grassi, Flavia ^{[2
]}

Amaducci, Alessandro ^{[1
]}

机构：

[1] Schaffner Grp, Automot Dept, CH-4542 Luterbach, Switzerland

[2] Politecn Milan, Dept Elect Informat & Bioengn, I-20133 Milan, Italy

来源：

IEEE TRANSACTIONS ON ELECTROMAGNETIC COMPATIBILITY | 2020年 / 62卷 / 04期

关键词：

Impedance; Impedance measurement; Switched mode power supplies; Current measurement; Power transformer insulation; Automotive engineering; Power measurement; Automotive switched-mode power supplies; common mode (CM); conducted emissions (CEs); differential mode (DM); NOISE-SOURCE IMPEDANCE; SMPS;

D O I：

10.1109/TEMC.2019.2941449

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The measurement of modal impedances of switching-mode power supplies (SMPSs) is of paramount importance in electromagnetic compatibility applications, especially when designing electromagnetic interference filters to suppress the conducted and radiated electromagnetic emissions is the target. A novel measurement technique that makes use of an impedance analyzer and a coupling transformer and allows extracting the complex value of common- and differential-mode noise source impedance of an SMPS is proposed. The measurement procedure is first studied from the theoretical point of view, then experimentally validated with passive components, and eventually implemented in a CISPR-25 conducted emission test setup to measure the magnitude and phase of modal impedances of an automotive SMPS under different operation conditions.

引用

页码：1349 / 1357

页数：9

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