Stator winding method, stator manufacturing method, stator, and electrical rotating machine

A stator comprising:

• a stator core comprising twelve magnetic pole teeth arranged at equal angular intervals on an inner peripheral portion thereof, and slots formed between adjacent magnetic pole teeth;
• and
• three-phase windings formed of a conductor and wound around the twelve magnetic pole teeth of the stator core,
• wherein the windings of the respective phases share a first common winding pattern of the conductor around the magnetic pole teeth but differ from one another in their circumferential positions on the stator core,
• the winding of each phase comprises a first portion and a second portion, which share a second common winding pattern of the conductor around the magnetic pole teeth but differ from each other in their circumferential positions on the stator core by half a circumference, and
• wherein when two axial end faces of the stator core are defined as a first end face and a second end face, respectively;
• and
• the twelve magnetic pole teeth are defined as, in order toward a first circumferential direction that is one of circumferential directions of the stator core, a first tooth through a twelfth tooth, respectively,
• in the first portion of one of the three phases, the conductor is:
• drawn into a first slot adjacent to the first tooth from the first end face side;
• continuously wound around the first tooth in a first direction;
• continuously drawn out from the first slot to the second end face side and routed as a linking portion along the second end face side to a position of a second slot adjacent to the fourth tooth;
• continuously drawn into the second slot from the second end face side, drawn out to the first end face side without being wound around any magnetic pole tooth, pulled out by a predetermined length, and drawn again into the second slot from the first end face side to form a lead-out portion on the first end face side;
• continuously wound around the fourth tooth in a second direction opposite to the first direction;
• and
• continuously drawn out to the first end face side from a third slot, which is adjacent to the fourth tooth and located on a side opposite to the second slot with respect to the fourth tooth.

A stator comprising:

• a stator core comprising twelve magnetic pole teeth arranged at equal angular intervals on an inner peripheral portion thereof, and slots formed between adjacent magnetic pole teeth;
• and
• three-phase windings formed of a conductor and wound around the twelve magnetic pole teeth of the stator core,
• wherein the windings of the respective phases share a first common winding pattern of the conductor around the magnetic pole teeth but differ from one another in their circumferential positions on the stator core,
• the winding of each phase comprises a first portion and a second portion, which share a second common winding pattern of the conductor around the magnetic pole teeth but differ from each other in their circumferential positions on the stator core by half a circumference, and
• wherein when two axial end faces of the stator core are defined as a first end face and a second end face, respectively;
• and
• the twelve magnetic pole teeth are defined as, in order toward a first circumferential direction that is one of circumferential directions of the stator core, a first tooth through a twelfth tooth, respectively,
• in the first portion of one of the three phases, the conductor is:
• drawn into a first slot adjacent to the first tooth from the first end face side;
• continuously wound around the first tooth in a first direction;
• continuously drawn out from the first slot to the second end face side and routed as a linking portion along the second end face side to a position of a second slot adjacent to the fourth tooth;
• continuously drawn into the second slot from the second end face side;
• continuously wound around the fourth tooth in the first direction;
• and
• continuously drawn out from the second slot to the first end face side, and
• wherein the windings of the three phases differ from one another in their circumferential positions by one magnetic pole tooth.

A stator comprising:

• a stator core comprising twelve magnetic pole teeth arranged at equal angular intervals on an inner peripheral portion thereof, and slots formed between adjacent magnetic pole teeth;
• and
• three-phase windings formed of a conductor and wound around the twelve magnetic pole teeth of the stator core,
• wherein the windings of the respective phases share a first common winding pattern of the conductor around the magnetic pole teeth but differ from one another in their circumferential positions on the stator core,
• the winding of each phase comprises a first portion and a second portion, which share a second common winding pattern of the conductor around the magnetic pole teeth but differ from each other in their circumferential positions on the stator core by half a circumference, and
• wherein when two axial end faces of the stator core are defined as a first end face and a second end face, respectively;
• and
• the twelve magnetic pole teeth are defined as, in order toward a first circumferential direction that is one of circumferential directions of the stator core, a first tooth through a twelfth tooth, respectively,
• in the first portion of one of the three phases, the conductor is:
• drawn into a first slot adjacent to the second tooth from the first end face side;
• continuously wound around the second tooth in a first direction;
• continuously wound around the first tooth in a second direction opposite to the first direction;
• and
• drawn out to the first end face side from a second slot adjacent to the first slot, after completing the winding around the first tooth at the second slot.