| 摘要 |
PURPOSE:To enhance the efficiency by rotating a permanent magnet together with a rotor member, thereby eliminating an iron loss. CONSTITUTION:A winding 2 is mounted on a supporting member 3 through the prescribed air gap from a rotational shaft 1, and the member 3 is mounted on an end bracket 4. A rotor 7 of substantially U-shaped section is provided to hold to winding 2 between an inner rotor member 8 and an outer rotor member 9 through the prescribed air gap. The members 8, 9 for holding the winding 2 are rotated at the shaft 1 as a center, and a permanent magnet 11 provided at the side of the winding 2 of the member 8 is simultaneously rotated. Accordingly, variations in the magnetic fluxes of the members 8, 9 are eliminated to suppress an eddy current. |
