FLYWHEEL ENERGY STORAGE DEVICE

摘要

The invention provides a flywheel energy storage device (1), comprising a housing (2) supported on the environment, a central stator (14) supported therein, and a rotor (22) which is supported rotatably by said stator (14) by means of two ball-bearings (16a, 16b) and is coaxial with said stator (14) and encloses it, in the case of which vibration-free operation over the full operating speed range of the flywheel (22) is achieved through the fact that the ball-bearings (18a, 18b) are each accommodated with radial stiffness between the rotor (22) and a top and bottom auxiliary carrier (8a, 8b) respectively, each supported on the stator, while the stator (14) is connected at the top and bottom side to the housing by means of a support (8a, 8b), and the radial stiffnesses of the various supports (8a, 8b, 16a, 16b) comply with the specifications given in the claims.