Rotary electric machine and automobile provided with the same

摘要

The invention relates to a rotary electric machine that is capable of improving the reliability of an object provided with the same. A permanent magnet type synchronous rotary electric machine comprises a stator (10) provided with windings, and a rotor (20) supported for rotation in the stator (10) with a gap between the inner surface of the stator (10) and the outer surface thereof, divided into two rotor bodies (20A; 20B) each provided with permanent magnets of opposite polarities alternately arranged in a circumferential direction. In switching the permanent magnet type synchronous rotary electric machine from a motor to a generator, a second rotor body (20B) is moved axially relative to a first rotor body (20A) to an axial position that makes the intensity of a combined magnetic field created by the permanent magnets lower than that of a combined magnetic field created by the permanent magnets when the second rotor body (20B) is located at a predetermined position, and then the second rotor body (20B) is moved to the predetermined position.