A New Emi Filter Selection Method And A Comparison With The Existent Radiation-based Method

摘要

This article describes a new method for the selection of an appropriate signal line Electromagnetic Interference (EMI) filter. It describes an EMI filter selection method based on the signal's FFT measurement. This selection has proved to be efficient also for quick engineer use. We optimize the EMI filter for each single line separately. The method described in this article involving a Central Processor Unit (CPU) module demonstrates the comparison between new FFT-based selection method and the existent radiation-based one.%Ovaj članak opisuje novi postupak za odabir odgovarajućeg elektromagnetsko-interferentnog (EMI) filtra linije signala. Opisana je metoda odabira EMI filtra temeljena na mjerenju spektra signala (FFT). Ovakav odabir se, također, pokazao kao efikasan za brzu inženjersku primjenu. Optimizira se EMI filtar posebno za svaku liniju signala. Metoda opisana u ovom članku koristi CPU modul i prikazuje usporedbu novog postupka odabira temeljenog na FFT-u i postojećeg postupka temeljenog na radijaciji.