| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a stator for a three-phase rotary electric machine which can be produced at low cost by decreasing the number of components with a coil arrangement where a coil pitch is a full-pitch and a higher harmonic wave component of induction electromotive force is reduced.SOLUTION: The stator for the three-phase rotary electric machine includes: a wavy wound armature coil; a plurality of slots 13 each accommodating a plurality of coil pieces 12 of the armature coil; and a plurality of coil pieces 12 each having a coil pitch equal to a magnetic pole pitch. In every other slot 13, the plurality of coil pieces 12 are accommodated in such a manner that currents flowing in n-th layer and (n+1)th layer coil pieces 12 ((n) is a positive integer) have a phase difference of 2/3πrad, that all the currents flowing in odd-numbered layers of coil pieces 12 have the same phase and that all the currents flowing in even-numbered layers of coil piece 12 have the same phase. Thus, the stator for the three-phase rotary electric machine can be produced at low cost by reducing the number of components in the coil arrangement where the coil pitch is the full-pitch and the higher harmonic wave component of induction electromotive force is reduced.</p> |
