| 摘要 |
PURPOSE:To simplify the manufacture of a synchronous machine and to reduce the size of a magnetizing DC power source by energizing a DC with an armature winding after completing the assembling of the machine, thereby magnetizing a field. CONSTITUTION:A ferromagnetic unit 41a is associated in a rotor 41 in the not magnetized state, and assembled as a synchronous machine. Slots are formed at a stator 42, and armature windings are wound in the respective slots. A current from a DC power source is flowed to the windings to form magnetic fluxes, and the unit 41a is magnetized to form a permanent magnet. In this case, since a gap between the rotor 41 and the stator 41 is small, they can be efficiently magnetized. |
