METHOD AND DEVICE FOR CHARGING A BATTERY OF A MOTOR VEHICLE DEPENDING ON THE IMPEDANCE OF A POWER SUPPLY NETWORK AND MOTOR VEHICLE PROVIDED WITH SUCH A CHARGING DEVICE

摘要

The method comprises filtering the current delivered by an electrical power supply network and feeding the electrical power from the network to the battery (B) via a voltage step-down stage (3) and a voltage step-up stage (4) while controlling the chopping duty ratios of said voltage step-down and step-up stages. Furthermore, the harmonics are compensated using a variable gain amplification stage. Moreover, the impedance of the power supply network is determined and the variable gain is adapted according to the impedance of the network.