Apparatus and method for supplying an electric drive with electric current

The present invention relates to a device (100) and a method for supplying an electric drive (101) with electric current. For this purpose, three DC-DC converter (102, 103, 104) for coupling at least two connectable electrical energy sources (105, 106) with the electric drive (101) is provided. The DC voltage converter (102, 103, 104) are so coupled that a direct coupling of each of the at least two electrical power sources (105, 106) with the electric drive (101) over a single one of the three DC-DC converter (102, 103, 104) formed becomes.