METHOD FOR CONTROLLING A CHARGER FOR A MOTOR VEHICLE BATTERY WITH A REDUCTION OF LOSSES DUE TO SWITCHING

摘要

The invention relates to a method for controlling a battery charger for a motor vehicle, the battery charger including an input filter (1) connecting a three-phase power supply circuit to a buck converter (2), a boost circuit (3) being connected to the buck converter (2) and to the battery (BAT). The method includes the following steps: the output threshold voltage of the buck converter (2) is determined on the basis of the difference between a battery-current measurement and a battery-current request; the output voltage of the buck converter (2) is kept constant; and the switches of the boost stage (3) are controlled so as to be kept open.