Patent ID: 11909260
Assignee: SIEMENS GAMESA RENEWABLE ENERGY A/S
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 13:
14. A method of manufacturing a stator for an electric machine comprising:
providing a stator having a stator yoke longitudinally extending along a longitudinal axis of the stator, a plurality of teeth protruding according to a radial direction orthogonal to the longitudinal axis from the stator yoke to respective radial tooth ends and a plurality of slots extending radially from the stator yoke to respective radial slot ends, the plurality of slots being circumferentially interposed between the teeth of the stator, each slot including a bottom portion adjacent to the stator yoke and a top portion adjacent to the respective radial slot end, the stator comprising a plurality of segments, each segment comprising a first end slot and a second end slot at two respective circumferential ends, each end slot having a circumferential extension corresponding to half a circumferential extension of each of the plurality of slots of the stator,
providing a plurality of coils housed in the plurality of slots, each slot housing at least one coil in the bottom portion and at least another coil in the top portion, each end slot housing at least one coil in one of the bottom portion and the top portion, the other of the bottom portion and the top portion being free of coils,
connecting each coil housed in the bottom portion of a first slot of the plurality of slots to another respective coil housed in the top portion of a second slot of the plurality of slots, and circumferentially joining together the plurality of segments such that when two adjacent segments are joined together, the slots of the stator are formed.