Method and active filter for reducing ripple of a current drawn by a charge from a network

摘要

For reducing residual ripple in a current drawn via a current redresser (2) by a load (10) from a mains supply (9) by means of an active mains current feedback filter, current between the current redresser and the load is split into parallel current channels (It,Jt) fitted with a separate high setting regulator. A high setting regulator switch (5a,5b) acting as a power factor regulator is triggered by counter-dephased switching signals.