	US 12,249,882 B2
	Stator winding arrangement
Nadhem Boubaker, Buckinghamshire (GB); Daniel Matt, Castelnau-le-Lez (FR); and Florent Nierlich, Antony (FR)
Assigned to CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, Paris (FR); SAFRAN ELECTRICAL & POWER, Buckinghamshire (GB); and SAFRAN LANDING SYSTEMS, Velizy-Villacoublay (FR)
Appl. No. 17/594,221
Filed by Centre National De La Recherche Scientifique, Paris (FR); Safran Electrical & Power, Buckinghamshire (GB); and Safran Landing Systems, Vélizy-Villacoublay (FR)
PCT Filed Apr. 8, 2020, PCT No. PCT/IB2020/000337 § 371(c)(1), (2) Date Oct. 7, 2021, PCT Pub. No. WO2020/208425, PCT Pub. Date Oct. 15, 2020.
Claims priority of application No. 1905046 (GB), filed on Apr. 9, 2019.
Prior Publication US 2022/0140684 A1, May 5, 2022
Int. Cl. H02K 3/28 (2006.01); H02K 1/16 (2006.01); H02K 3/12 (2006.01)

CPC H02K 3/28 (2013.01) [H02K 1/165 (2013.01); H02K 3/12 (2013.01); H02K 2213/03 (2013.01)]

18 Claims

1. An electrical machine for use in an aircraft, comprising:

a rotor, wherein the rotor comprises a plurality of rotor poles; and

a stator comprising a plurality of phases, wherein each respective phase occupies at least one elementary block, the at least one elementary block of each phase comprising a set of conductors of the respective phase wound around a plurality of slots of the respective elementary block in a concentrated winding configuration;

wherein a mechanical shift angle between the respective concentrated windings of each pair of adjacent elementary blocks is greater than a rotor pole pitch, the rotor pole pitch being an angle between adjacent poles of the rotor; and

wherein each elementary block comprises a plurality of slots arranged to house two conductors of the respective concentrated winding to define an inner layer and an outer layer, and wherein the stator further comprises a further intermediate slot arranged to house one conductor configured to provide a return path connecting the inner layer and the outer layer of each respective elementary block.