POWER FACTOR CORRECTION CIRCUIT FOR THREE-PHASE POWER SUPPLY

摘要

The present invention relates to a power-factor correction circuit for athree-phase power supply. The correction circuit comprises a filtering unit attheinput receiving the three phases of the current, at least one inductor perphase placed downstream of the filtering unit, a rectifying bridge powering acurrent-chopping stage, characterized in that the filtering unit comprises adifferential-mode filtering cell comprising at least one inductive circuit(511)formed of a single magnetic material in a double E, each leg of the E beingsurrounded by a winding. The invention applies notably to the field of powerelectronics, in particular to the production of three-phase power supplyunits.