Patent ID: 9118231
Filing Date: 2015-08-25
Classification: H02K

Abstract:
1. A stator of a rotating electrical machine, which includes a stator core and stator coils of a plurality of phases wound on the stator core, the stator coils having: an n number (where n≧6) of unit coils arranged circumferentially with respect to the stator core; a first coil group constituted by a part of the unit coils, said part having a same polarity and being series connected, the first coil group having two terminals one of which is connected to a first power supply input terminal and the other of which is connected to a first neutral terminal; and a second coil group constituted by a remaining part of the unit coils, said remaining part having a polarity reverse to the unit coils of the first group and being series connected, the second coil group having two terminals one of which is connected to a second power supply input terminal and the other of which is connected to a second neutral terminal, wherein: the unit coils constituting the first coil group include a first unit coil which is located nearest the first power supply terminal and is adjacent to a first unit coil which constitutes the second coil group and is located nearest the second power supply terminal; the unit coils constituting the first coil group include a second unit coil which is located second nearest the first power supply terminal and is adjacent to the first unit coil of the second coil group; the unit coils constituting the second coil group include a second unit coil which is located second nearest the second power supply terminal and is adjacent to the first unit coil of the first coil group; the unit coils constituting the first coil group include a third unit coil which is located third nearest the first power supply terminal and is adjacent to the second unit coil of the second coil group; and the unit coils constituting the second coil group include a third unit coil which is located third nearest the second power supply terminal and is adjacent to the second unit coil of the first coil group.