| abstract |
(57) [Problem] To provide a small-sized, high-output, low-noise vehicle alternator. A vehicle alternator (1) includes a rundle-type rotor (3) and supplies cooling air to a stator (2) disposed outside the rotor (3). The stator 2 includes a stator core 32 And a plurality of slots 3 formed in the stator core 32. And a stator winding provided in the fifth embodiment. The stator windings include two sets of three-phase windings whose electrical angles are shifted by 30 degrees, and are connected so that outputs of these windings are combined and output as three phases. A coil end 31 is formed at an axial end of the stator core 32, and the coil ends 31 are aligned and separated from each other, The cooling air provided by the rotation of the rotor 3 uniformly cools all windings. |