Abstract: A charging station for charging electric vehicles, having a connection unit for connecting the charging station to an electrical supply infrastructure and for supplying the charging station with electrical supply current; at least two direct current voltage sources, at least one of which is electrically coupled to the connection unit in order to be supplied with the electrical supply current by the connection unit, and which are configured to provide a proportionate electrical power for charging at least one electric vehicle by means of a direct current charging voltage which can be set in a respective direct current charging voltage range; a coupling unit for temporarily coupling the electric vehicle to at least one of the DC voltage sources; and a control unit for adjusting the DC charging voltages of the DC voltage sources and for connecting the DC voltage sources to the coupling unit depending on a voltage requirement.

Abstract: Disclosed is a dual motor unit for a flywheel mass accumulator, with at least two electric machines coupled to a common rotary body; wherein the electric machines have different power characteristics and the dual motor unit is adapted to provide a total operating power in an operating speed range (?) by an interaction of the electric machines. The power characteristic (Pmax) is non-linearly dependent on a rotational speed (?) of the common rotary body.

Abstract: Disclosed is a dual motor unit for a flywheel mass accumulator, with at least two electric machines coupled to a common rotary body; wherein the electric machines have different power characteristics and the dual motor unit is adapted to provide a total operating power in an operating speed range (?) by an interaction of the electric machines. The power characteristic (Pmax) is non-linearly dependent on a rotational speed (?) of the common rotary body.