US 12,355,306 B2
Rotor body for a permanent magnet machine
Ziad Azar, Sheffield (GB); Balazs Janos Becs, Flensburg (DE); Vikas Choudhary, Bangalore (IN); Edom Demissie, Sheffield (GB); Erik Groendahl, Them (DK); Bo Nedergaard Jacobsen, Odder (DK); and Adriana Cristina Urda, Mill Creek, WA (US)
Assigned to SIEMENS GAMESA RENEWABLE ENERGY A/S, Brande (DK)
Appl. No. 18/274,112
Filed by Siemens Gamesa Renewable Energy A/S, Brande (DK)
PCT Filed Nov. 25, 2021, PCT No. PCT/EP2021/083001
§ 371(c)(1), (2) Date Jul. 25, 2023,
PCT Pub. No. WO2022/167117, PCT Pub. Date Aug. 11, 2022.
Claims priority of application No. 21154711 (EP), filed on Feb. 2, 2021.
Prior Publication US 2024/0429762 A1, Dec. 26, 2024
Int. Cl. H02K 1/2791 (2022.01); F03D 9/25 (2016.01); H02K 7/102 (2006.01); H02K 7/18 (2006.01); H02K 15/03 (2025.01); H02K 21/22 (2006.01)
CPC H02K 1/2791 (2022.01) [F03D 9/25 (2016.05); H02K 7/102 (2013.01); H02K 7/1838 (2013.01); H02K 15/03 (2013.01); H02K 21/22 (2013.01); F05B 2220/706 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A rotor for an electrical machine extending along a longitudinal axis between a drive end and an axially opposite non-drive end, the drive end being attachable to a torque input, the rotor comprising:
a rotor body extending axially between the drive end and the non-drive and extending radially orthogonal to the longitudinal axis between an inner side and an outer side; and
a plurality of permanent magnets attached to the inner side circumferentially distributed about the longitudinal axis
wherein the rotor body includes a plurality of lamination sheets stacked along the longitudinal axis;
wherein the rotor body includes a plurality of axial strengthening elements inserted in respective axial holes extending across two or more lamination sheets of the plurality of lamination sheets;
wherein the axial strengthening elements further comprise pins inserted in respective pin holes, each pin and pin hole extending across two or more lamination sheets of the plurality of lamination sheets.