Patent ID: 8416594

Claim:
A power converter comprising: a rectifier stage connected to a number of input phases of a network delivering an input current and to which is applied a rectified voltage and at the output of which is obtained a current, called rectifier current; a DC power supply bus connected to the rectifier stage and including a first power supply line and a second power supply line to each of which is applied an electrical potential in order to obtain a voltage on the DC power supply bus; a bus capacitor connected to the first power supply line and to the second power supply line; a controlled current source situated on the first power supply line or the second power line, upstream of the bus capacitor, said controlled current source including an inductance and an electronic converter including a capacitor and two switching arms; and control means for controlling the two switching arms of the electronic converter to modulate a voltage at the terminals of the capacitor in order to obtain, at each instant, a determined voltage at the terminals of the electronic converter, wherein the control means are arranged to obtain a discontinuous operating mode of the rectifier stage by alternation of a modulation phase of the switching arms with a saturation phase in which the two switching arms are simultaneously kept conducting, said saturation phase being applied for a determined duration β so as to keep the voltage at the terminals of the capacitor of the electronic converter below the maximum absolute value of the difference between the rectified voltage and the voltage applied to the DC power supply bus and to increase the average value of the voltage applied to the DC power supply bus.