| 摘要 |
PURPOSE:To enable to drive a motor from an ultralow speed to a high speed by providing a permanent magnet at a stator side, thereby reducing the inertia of a rotor. CONSTITUTION:A rotor 4 is supported through a bearing to a rotational shaft 9, a rotor pole core 10 is formed at the center of the shaft, a stator yoke 11 is contacted with both ends of the core 10, a magnetic flux collecting body 12 is further contacted with the outside of the yoke 11, and secured to the shaft 9. On the other hand, a cylindrical stator yoke 14 is provided inside an outer box 6 of the stator 5, a cylindrical stator pole core 15 is formed oppositely to the core 10 inside the yoke 14, and a ring-shaped permanent magnet 16 is provided oppositely to the body 12 inside the yoke 14. |
