DocumentCode :
3074970
Title :
Diagnosis of conducted interference with discrimination network
Author :
Yak, See Kye ; Sum, Ng Chee
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Univt., Singapore
fYear :
1995
fDate :
21-24 Feb 1995
Firstpage :
433
Abstract :
Power supply circuit testing for compliance to conducted emission limits utilizes a line impedance stabilization network (LISN) and is usually carried out during the final stage of the product design. However, the LISN measures only the total contribution of common-mode (CM) and differential-mode (DM) emissions in the live or neutral line. In EMI filter design, it is always desirable to be able to determine whether the differential- or the common-mode component is dominant in order to pin-point the effective element of the filter to be changed to reduce the total emission. This, in essence, minimizes the trial-and-error guess work in selecting the proper components of the filter and cuts down on design time. This paper touches on the conventional way for measuring total conducted noise emissions of a product and how the CM/DM discrimination network (CM/DM DN) can be used as an effective diagnostic tool for the modification of power supply filters to reduce conducted noise emissions
Keywords :
circuit testing; electromagnetic interference; power filters; power supplies to apparatus; power supply circuits; EMI compliance; EMI filter design; common-mode emissions; conducted emission limits; diagnostic tool; differential-mode emissions; discrimination network; line impedance stabilization network; live line; neutral line; power supply circuit testing; product design; total conducted noise emissions; Circuit testing; Delta modulation; Electromagnetic interference; Filters; Impedance; Noise measurement; Noise reduction; Power measurement; Power supplies; Product design;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics and Drive Systems, 1995., Proceedings of 1995 International Conference on
Print_ISBN :
0-7803-2423-4
Type :
conf
DOI :
10.1109/PEDS.1995.404883
Filename :
404883
Link To Document :
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