Power factor correction circuit for three-phase power supply

A correction circuit of the power factor of a circuit for a three-phase electric network, comprising:

• a filtering unit at the input of said correction circuit receiving the three phases of the current,
• at least one inductor per phase of current placed downstream of the filtering unit, and
• a rectifying bridge powering a current-chopping stage,
• wherein the filtering unit comprises at least one differential-mode filtering cell comprising at least one inductive circuit formed of a single magnetic material in a double E, each leg of the E being surrounded by a winding, the values of the inductors being chosen so that said correction circuit operates at the boundary between the continuous mode and the discontinuous mode, and
• wherein the filtering unit includes a first common-mode filtering cell, associated in series with a first of the at least one differential-mode filtering cell, and a second differential-mode filtering cell, wherein the filtering unit also comprises a second common-mode filtering cell comprising a mid-point output and inserted between the first differential-mode filtering cell and the second differential-mode filtering cell.