US 11,728,705 B2
Rotating electrical machine
Toshiaki Uga, Kariya (JP); Yoshihisa Shuji, Kariya (JP); Masahito Fujieda, Nisshin (JP); and Hirotaka Kurozaki, Kariya (JP)
Assigned to DENSO CORPORATION, Kariya (JP)
Filed by DENSO CORPORATION, Kariya (JP)
Filed on Jun. 14, 2021, as Appl. No. 17/347,117.
Claims priority of application No. 2020-102709 (JP), filed on Jun. 12, 2020.
Prior Publication US 2021/0391764 A1, Dec. 16, 2021
Int. Cl. H02K 3/28 (2006.01); H02K 3/14 (2006.01); H02K 3/48 (2006.01)
CPC H02K 3/28 (2013.01) [H02K 3/14 (2013.01); H02K 3/48 (2013.01); H02K 2213/03 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A rotating electrical machine comprising:
a stator which includes a stator core and a stator winding, the stator core having formed therein a plurality of slots arranged adjacent each other in a circumferential direction of the stator core, the stator winding being equipped with a plurality of phase coils wound in the slots; and
a rotor which is disposed to face the stator and has a plurality of magnetic poles arranged adjacent each other in a circumferential direction of the rotor, wherein
the phase coils are connected at first ends thereof to respective phase terminals and at second ends thereof to a neutral point;
each of the phase coils includes a plurality of unit coils which are connected in series with each other in a joining sequence from a corresponding one of the phase terminals and arranged at a given slot pitch away from each other between a corresponding one of the phase terminals and the neutral point, the unit coils being connected together using connecting conductors,
the connecting conductors includes a first connecting conductor which connects the ith unit coil to the (i+1)th unit coil, as counted from a corresponding one of the phase terminals in the joining sequence, and a second connecting conductor which connects the (i+1)th unit coil to the (i+2)th unit coil, as counted from a corresponding one of the phase terminals in the joining sequence, and
each of the phase coils includes two or more reversing connecting conductors each of which is provided by the second connecting conductor and orients a direction in which the second connecting conductor extends from the (i+1)th unit coil to the (i+2)th unit coil to be opposite to that in which the first connecting conductor extends from the ith unit coil to the (i+1)th unit coil in the circumferential direction of the stator core.