Method for controlling a battery charging device embedded in an electric or hybrid motor vehicle, said charging device being able to be connected to a three-phase electrical power supply network in order to charge the battery and comprising an insulated AC-DC converter comprising a power factor correcting circuit and a DC-DC converter, said power factor correcting circuit being a Vienna three-phase rectifier comprising a three-phase diode bridge and three switching arms (S1, S2, S3) incorporated in the diode bridge, the switching arms being able to be each connected to one of the respective phases (A, B, C) of the three-phase power supply network via a series inductance coil (L1, L2, L3) and each comprising a series mounting of a top switch that can be driven when the current of the network is positive and of a bottom switch that can be driven when the current of the network is negative, the switching arms (S1, S2, S3) being interconnected at a midpoint to which are linked a first output capacitor to support a first output voltage (V DC_high) of the three-phase diode bridge and a second output capacitor to support a second output voltage (V DC_low) of the three-phase diode bridge, said output voltages being regulated indirectly by a current regulator to a same output voltage value (Vdc), each arm being driven using pulse-width modulation control signals, the switching duty cycle of which is determined as a function of said regulation of the currents at the input of the rectifier generating target voltages between phases to be produced as a function of setpoint current values, characterized in that it comprises steps in which: - over each period portion representing a sixth of a complete period of the setpoint currents, combinations of closure of switches, mutually exclusive, capable of producing the target voltages between phases desired by the regulation are determined, such that, to produce a target voltage greater than said output voltage value (Vdc) only the combinations of switches that make it possible to produce said output voltage value (Vdc) or twice said output voltage value (2*Vdc) are considered and, to produce a target voltage less than said output voltage value (Vdc), only the combinations of switches that make it possible to produce a zero voltage or said output voltage value (Vdc) are considered, - for each combination of switches, the current supplied on each capacitor is determined, - the current of each capacitor is measured, - duty cycles are calculated for each switch driven on the basis of the combinations of closure of switches determined for the production of the target voltages between phases, so as to obtain currents that are equal and substantially constant in the two output capacitors, namely within a deviation of at most 10% over several electrical periods, the first and second output voltages being controlled by said DC-DC converter. - over each period portion representing a sixth of a complete period of the setpoint currents, combinations of closure of switches, mutually exclusive, capable of producing the target voltages between phases desired by the regulation are determined, such that, to produce a target voltage greater than said output voltage value (Vdc) only the combinations of switches that make it possible to produce said output voltage value (Vdc) or twice said output voltage value (2*Vdc) are considered and, to produce a target voltage less than said output voltage value (Vdc), only the combinations of switches that make it possible to produce a zero voltage or said output voltage value (Vdc) are considered, - for each combination of switches, the current supplied on each capacitor is determined, - the current of each capacitor is measured, - duty cycles are calculated for each switch driven on the basis of the combinations of closure of switches determined for the production of the target voltages between phases, so as to obtain currents that are equal and substantially constant in the two output capacitors, namely within a deviation of at most 10% over several electrical periods, the first and second output voltages being controlled by said DC-DC converter.