A winding wire (14) includes a first coil (15) formed by being wound N/2+ times between two predetermined slots (13) present in positions which are point-symmetrical with respect to a rotating shaft, and a second coil (16) formed by being wound N/2 times between the two predetermined slots (13) which are the same as those between which the first coil (15) is formed, when a predetermined number of turns of the winding wire (14) between the predetermined slots is N.

A winding wire (14) includes a first coil (15) formed by being wound N/2+ times between two predetermined slots (13) present in positions which are point-symmetrical with respect to a rotating shaft, and a second coil (16) formed by being wound N/2 times between the two predetermined slots (13) which are the same as those between which the first coil (15) is formed, when a predetermined number of turns of the winding wire (14) between the predetermined slots is N.

An electrical machine, particularly a permanent magnet motor, having a number of poles and teeth or tooth groups that is divisible by a whole number A around which coil-forming loops of winding wire are arranged such that B coils are arranged in series, the coils having a number of windings equivalent to C/B where C is a whole number divisor of B and indicates the wire diameter as a quotient of a traditional standard winding, as well as a method to provide a corresponding winding structure.

An electrical machine, particularly a permanent magnet motor, having a number of poles and teeth or tooth groups that is divisible by a whole number A around which coil-forming loops of winding wire are arranged such that B coils are arranged in series, the coils having a number of windings equivalent to C/B where C is a whole number divisor of B and indicates the wire diameter as a quotient of a traditional standard winding, as well as a method to provide a corresponding winding structure.

An armature manufacturing method includes preparing a core member that includes a rotation shaft at a central portion and that is formed with plural teeth in a radiating shape centered on the rotation shaft; and winding winding wires onto slots between the plural teeth so as to form plural types of winding coil sections, each with a different winding wire diameter.