US 12,218,569 B2
Stator segment, stator, wind turbine and method of manufacturing a stator segment
Simon Vyff Jensen, Tørring (DK)
Assigned to SIEMENS GAMESA RENEWABLE ENERGY A/S, Brande (DK)
Appl. No. 17/796,333
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed Jan. 13, 2021, PCT No. PCT/EP2021/050547
§ 371(c)(1), (2) Date Jul. 29, 2022,
PCT Pub. No. WO2021/156029, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 20155826 (EP), filed on Feb. 6, 2020.
Prior Publication US 2023/0107708 A1, Apr. 6, 2023
Int. Cl. H02K 1/18 (2006.01); H02K 7/18 (2006.01); H02K 15/02 (2006.01)
CPC H02K 7/183 (2013.01) [H02K 1/187 (2013.01); H02K 15/02 (2013.01); H02K 2201/15 (2013.01); H02K 2213/12 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A stator segment for an electric machine, the stator segment comprising:
a support structure;
a lamination stack; and
at least one fastening member for fastening the lamination stack to the support structure;
wherein the lamination stack comprises a plurality of lamination packets stacked between a drive end and a non-drive end, each lamination packet comprising a yoke having a plurality of teeth extending radially outwards on one side of the yoke and a connection structure formed at a side opposite the teeth, the connection structure being shaped to engage with the at least one fastening member in such a way that a part of the fastening member extends within the yoke;
wherein the connection structure extends from the side of the yoke opposite the teeth to form at least one elongate recess extending from the drive end towards the non-drive end, the elongate recess extending at least partially within the yoke;
wherein the at least one fastening member comprises a rod shaped to fit slidably into the at least one elongate recess, and the at least one elongate recess and the rod have corresponding cross-sectional half-moon shape configured to form a dovetail connection.