US 12,249,885 B2
Circumferential arrangement of stator winding end leads
Yogesh Wani, Peterborough (GB); Peethamparam Anpalahan, Peterborough (GB); Darren Camilleri, Peterborough (GB); Narasimha Saraswati, Peterborough (GB); Hu Guoqing, Peterborough (GB); and Lake Zhao, Peterborough (GB)
Assigned to Cummins Generator Technologies Limited, Peterborough (GB)
Appl. No. 17/309,029
Filed by Cummins Generator Technologies Limited, Peterborough (GB)
PCT Filed Oct. 14, 2019, PCT No. PCT/GB2019/052917
§ 371(c)(1), (2) Date Apr. 15, 2021,
PCT Pub. No. WO2020/079408, PCT Pub. Date Apr. 23, 2020.
Claims priority of provisional application 62/749,754, filed on Oct. 24, 2018.
Claims priority of application No. 1816855 (GB), filed on Oct. 16, 2018.
Prior Publication US 2022/0014064 A1, Jan. 13, 2022
Int. Cl. H02K 3/50 (2006.01); H02K 3/38 (2006.01); H02K 3/48 (2006.01); H02K 5/22 (2006.01)
CPC H02K 3/50 (2013.01) [H02K 3/38 (2013.01); H02K 3/48 (2013.01); H02K 5/225 (2013.01); H02K 2203/06 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A stator of a rotating electrical machine, the stator comprising:
a stator core comprising stator slots; and
a plurality of stator coils, the stator coils comprising:
side windings located in the stator slots,
end windings which extend out of the stator slots, and
end leads for connecting the stator coils, and
wherein each stator coil is wound from a single continuous conductor, and each end lead is part of the same continuous conductor as the side windings and the end windings of the stator coil,
wherein at least some of the end leads run circumferentially around a radially outwards side of the end windings,
wherein the stator further comprises a plurality of spacers located between the end windings and the end leads,
wherein each of the plurality of spacers comprises a base and a plurality of upright members, the end leads are accommodated between adjacent upright members, and the base is located against the end windings so as to space the end leads away from the end windings in a radial direction,
wherein the plurality of spacers are provided at a plurality of spaced locations circumferentially around the end windings, and
wherein the plurality of spacers create air gaps in a radial direction between the end windings and the end leads.