Patent ID: 7557483

Claim:
A rotating electrical machine comprising: a stator wherein each of stator coils for three phases have been wound on salient poles of a stator core by distributed winding; and a rotor on which a plurality of permanent magnets have been distributed at equal intervals in the circumferential direction, said rotor being supported to as to be rotatable facing said stator; the stator coils of each phase being formed such that two or more series of at least a plurality of stator coils are connected, wherein the one of said stator coils situated at the lead wire side is divided into N (wherein N=2, 3, or 4) groups in which the number of winds for each group is equal or approximately equal, a winding wire for a first group is wound on a spool leaving a gap of ((N−1)·P) with respect to the diameter P of the conducting wire, upon winding of said first group being complete, the winding is turned back so as to wind the winding wire for a second group in said gap, so as to be adjacent to the winding wire of said first group, and in the event that N=3 or greater, the winding wire of the next group is further wound in the gap adjacent to the winding wire of the previous groups, and wound on the spool arrayed in a single layer, wherein one said stator coil positioned at the neutral point side of the three phases of stator coils connected by Y-connection is wound such by arrayed winding so that the winds are sequentially adjacent in the winding direction, and subsequently inserted into a slot of the stator core of said stator, thereby configuring the stator coil.