Device for producing electric energy from the rotary motion of a shaft

The present invention relates to a device for generating electrical energy from the rotational movement of a shaft (10), which is provided with a rotational generator arrangement (70) comprising a stator arrangement (14, 22, 30, 32) and a rotor arrangement (16, 24, 34, 40, 41), wherein the stator arrangement is mounted non-rotatably on the shaft, the rotor arrangement is arranged coaxially to the shaft and surrounds the stator arrangement and is rotatably mounted via a rotary bearing (18, 20) relative to the stator arrangement, the stator arrangement is provided with at least one induction coil (32) and the rotor arrangement is provided with a device (34) made of permanent magnetic or soft magnetic material, which is formed hollow-cylindrical and surrounds the coil for the purpose of inductive interaction with the same, as well as with a deceleration arrangement (36, 40, 50, 52; 41) acting without contact to spatially fixed parts, which delays the rotation of the rotor arrangement about the shaft axis.