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Power line Filter Design using equivalent circuit of passive lumped components

Shashwatee Paul, Sri. S. Srinivasa Rao


A methodology to design power line filter, using the conventional technique of composite low pass filter has been presented. It is based on a model where common mode and differential mode interference is separately considered into the filter design. In this paper, the filter design process is carried out, by considering the effect of non-ideal behavior of passive lumped components. A proposed model of the power line filter design, based on the parasitic effect of the passive lumped elements is presented. The filter’s circuits were first simulated using Advanced design software (ADS) based on S-parameter to verify the basic filter response. The simulation result is compared with the cases, where the parasitic effects of passive lumped elements are not taken into account.


power line filter; common mode; differential mode; lumped compoments; conducted emission

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Clayton R.Paul, Electromagnetic compatibility, J.Wiley & Sons, Inc.

V.Prasad kodali, Engineering Electromagnetic Compatibility, The institute of Electrical and Electronics Engineers, Inc, New York

D.M. Pozer, Microwave Engineering, J.Wiley & Sons, Inc.

Mohit Kumar and Vivek Agarwal, Power line filter Design for Conducted EMI using Timi-domain measurements, IEEE transaction. On electromagnetic compatibility, Vol.48, NO.1, February 2006

Konstantin Kostov, Design and Characterization of Single-Phase Power Filters, Helsinki University of Technology.

Albert Miquel Sanchez, Joan Ramon Regue, Miquel Ribo, Pablo Rodriguez-Cepeda and Francisco Javier Pajares, A Modal Model of Common-Mode Chokes for Conducted Interference Prediction, IEEE transaction, On electromagnetic compatibility, Vol.52, NO.3. August 2010.

Konstantin Kostov and Jorma Kyyra, Insertion loss and Network parameters in the Analysis of Power Filters, Nordic Workshop on Power and Industrial Electronics, Espoo, Finland, June 2008.