Patent ID: 8552613

Claim:
A stator arrangement of an electric machine set up in a cylindrical form, wherein the stator arrangement is radially surrounded by a rotatably mounted rotor arrangement, during normal operation the stator arrangement is non-rotatably connected to a stationary part of the electric machine, the stator arrangement is releasable from the non-rotatable connection to the stationary part of the generator so as to be revolved relative to the stationary part of the generator, the stator arrangement is interlocked with a rotating part of the electric machine causing the stator arrangement to revolve when the rotating part rotates, and the interlocking of the stator arrangement with the rotating part is performed by applying direct current to coils intended for electro-magnetic induction of one of the stator arrangement and rotor arrangements so that the stator arrangement is locked with the rotating part via electro-magnetic force.