Patent ID: 7772738

Claim:
An electric machine comprising: an arched stator and a cylindrical rotor fitted inside the arched stator and in which flux flows in the radial direction between the stator and the rotor as in the case of a permanent-magnet radial-flux synchronous electric machine, wherein the stator of the machine comprises stator segments, and the stator segments are arranged to be physically separate from each other so that the stator comprises stator segments arched according to the radius of the rotor and working electromagnetically independently like a linear machine, each stator segment having a stator core and a winding separate from the other stator segments, the windings being arranged to fill a smaller portion of each winding slot formed in edge portions of each stator than slots in a middle portion of the respective stator segment, and an overhead supporting frame structure separate from the stator cores comprising several longitudinal ribs and parts between the longitudinal ribs.