ROTARY ELECTRIC MACHINE

PROBLEM TO BE SOLVED: To provide a rotary electric machine which is higher in reduction effect of a magnetic sound, and is realized at low cost. SOLUTION: Since one three-phase coil 23A constituting a Δ coil is connected in series to each phase of other three-phase coils 23B constituting a Y coil, circulation current flow can be prevented even if the generated voltages of a plurality of sets of the three-phase coils are different, so that the rotary electric machine of small type, high output and high efficiency can be realized without an output loss by the circulation current. Moreover, the Δ coil and the Y coil are arranged together within each slot 25 of a stator core 22, a deviation for every slot of the Δ coil and the Y coil is dispersed, and the imbalance of a magnetic vibrating force is decreased to reduce the magnetic sound. Furthermore, in a conventional example, two sets of rectifiers are required to convert a current generated in a stator from an alternating current to a direct current, but in this embodiment only one set of rectifiers 5 is required, by which manufacture at low cost is attained. COPYRIGHT: (C)2009,JPO&INPIT