The Input Impedance of Common-Mode and Differential-Mode Noise Separators

被引：9

作者：

Kostov, Konstantin S. ^{[1
]}

Schroth, Sebastian ^{[2
]}

Krismer, Florian ^{[2
]}

Priecinsky, Martin ^{[3
]}

Nee, Hans-Peter ^{[4
]}

Kolar, Johann W. ^{[2
]}

机构：

[1] Acreo Swedish ICT AB, S-16440 Kista, Sweden

[2] Swiss Fed Inst Technol, CH-8092 Zurich, Switzerland

[3] Bel Power Solut, R&D Dept, Dubnica Nad Vahom 01841, Slovakia

[4] Royal Inst Technol KTH, S-10044 Stockholm, Sweden

来源：

IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS | 2015年 / 51卷 / 03期

关键词：

Common mode (CM); delta network; differential mode (DM); electromagnetic compatibility (EMC); electromagnetic interference (EMI); International Electrotechnical Commission (IEC); measurement; noise separator; power filters; FILTER DESIGN; DIAGNOSIS;

D O I：

10.1109/TIA.2014.2370094

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper discusses the.-networks and other circuits designed to separate the conducted electromagnetic interference (EMI) into its common mode (CM) and differential mode (DM) components. The input impedances of CM/DM separators must be 50 Omega resistive in the measurement frequency range, and they must be independent of the values of the noise signals and noise source impedances. The conditions for achieving such input impedances are derived. It is shown that many of the proposed separators, including the.-network suggested in the International Special Committee on Radio Interference (CISPR) 16-1-2 standard, do not fulfill the input impedance requirement. This leads to unreliable CM and DM measurements and, consequently, to the oversizing of EMI filters and design by trial and error.

引用

页码：2352 / 2360

页数：9

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