US 12,034,338 B2
Rotary electrical machine with a rotor configuration which reduces the torque ripples
Radu Fratila, Creteil (FR); and Adham Kaloun, Creteil (FR)
Assigned to Valeo Equipements Electriques Moteur, Creteil (FR)
Appl. No. 17/254,614
Filed by Valeo Equipements Electriques Moteur, Creteil (FR)
PCT Filed Jun. 25, 2019, PCT No. PCT/FR2019/051565
§ 371(c)(1), (2) Date Dec. 21, 2020,
PCT Pub. No. WO2020/002827, PCT Pub. Date Jan. 2, 2020.
Claims priority of application No. 1855653 (FR), filed on Jun. 25, 2018.
Prior Publication US 2021/0119506 A1, Apr. 22, 2021
Int. Cl. H02K 1/27 (2022.01); H02K 1/276 (2022.01); H02K 21/14 (2006.01); H02K 29/03 (2006.01)
CPC H02K 1/2766 (2013.01) [H02K 21/14 (2013.01); H02K 29/03 (2013.01); H02K 2213/03 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A rotary electrical machine for motor vehicles, comprising:
a stator comprising a stator body provided with teeth delimiting notches, and a winding accommodated in the notches of the stator body;
a rotor comprising a rotor body and poles formed by permanent magnets,
wherein two successive polar angles each corresponding to a circumferential extent of a pole, or two successive double polar angles each corresponding to a circumferential extent of two adjacent poles have an angular difference from one another which depends on an angular offsetting parameter associated with a stator pitch that is defined as being equal to 360 divided by a number of the teeth;
wherein a double polar angle of the two successive double polar angles is defined by the following equation:
Ax=360/P−δ/2+x*δ/(P−1)
x being the rank of the double polar angle, i.e. a whole number contained between 0 and P−1, P being the number of pairs of poles, and δ being the angular offsetting parameter.