Patent ID: 8294392

Claim:
An arrangement for supplying power to a system having at least two operating systems, the arrangement comprising a plurality of electrical drive units constructed as synchronous machines, each electrical drive unit associated with a corresponding one of the at least two operating systems and constructed to supply mechanical power to or receive mechanical power from the corresponding operating system which is constructed to receive or to supply mechanical power or mechanical energy, a plurality of kinetic energy storage devices coupled to one another, each kinetic energy storage device having a corresponding electrical energy exchange machine constructed as an asynchronous machine comprising a slip ring rotor and being electrically connected an electrical drive unit in one-to-one correspondence, and a plurality of converters, each converter constructed to adjust an electrical frequency of the slip ring rotor of an electrical asynchronous machine connected to the converter with respect to an electrical frequency of a corresponding synchronous machine for variable speed control, said adjustment in the electrical frequency varying a direction and an intensity of a power flow between the electrical drive unit and the electrical machine, wherein the system and the kinetic energy storage device are operatively connected for bidirectional power flow, said bidirectional power flow keeping system-induced power peaks away from a power grid or reducing a magnitude of the system-induced power peaks.