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

摘要

A method for controlling a battery charger for a motor vehicle, the battery charger including an input filter connecting a three-phase power supply circuit to a buck converter, a boost circuit being connected to the buck converter and to the battery. The method includes: determining an output threshold voltage of the buck converter on the basis of the difference between a battery-current measurement and a battery-current request; keeping the output voltage of the buck converter constant; and controlling switches of the boost stage to be kept open.