The aim of this application note is to provide the reader with a comprehensive overview of the steps necessary toward a suitably dimensioned line filter whose format is as compact as possible. A discrete single-stage line filter is compared here with a discrete two-stage line filter by means of calculation, simulation and measurement. The different core materials of the common mode chokes and their properties are then explained. This application note also addresses the calculation of: varistors, leakage currents and discharge resistors. It requires a certain knowledge of passive components, filters and EMC measurement techniques.

1-phase mains filter design

How can the power grid be protected from unwanted interference caused by a connected device? This application note describes the steps required to create a suitably dimensioned mains filter.

To avoid unwanted interference in the power grid, a mains filter is often required to suppress interference signals generated by a connected load. This application note explains the steps required to design a suitably dimensioned mains filter.

Simulations and measurements are used to compare discrete versions of a single- and two-stage mains filter. In addition, the different core materials of current-compensated chokes and their properties are explained.

DOWNLOAD APPLICATION

More Info

https://www.we-online.com/en/support/knowledge/application-notes?d=anp015-line-filter