Device for supplying voltage to a work system

The arrangement has an electrical drive machine (2) which delivers mechanical power to a working system (1). The working system receives or delivers mechanical power or mechanical energy. Another electrical drive machine is provided which delivers mechanical power to another working system or receives mechanical power from the working system. A kinetic energy storage is provided which has an electrical energy exchanging machine (4). The electrical energy exchanging machine is electrically connected with the former electrical drive machine.