Evaluation of hybrid EMI filters to reduce the high level of conducted noise generated by the frequency inverter

Abstract

This article presents an analysis of the applicability of hybrid EMI filters to reduce common mode noise. The effectiveness of filters was tested when attenuating the high level of EMI noise generated by the frequency inverter. The influence of the use of various magnetic cores in the hybrid EMI filter construction was investigated and the obtained insertion losses with passive filters were compared. The article concludes with the summary of both filtration techniques.