| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rotary machine which enables variable-speed operation over a wide range from low speed to high speed with high output, and achieves efficiency improvement, reliability improvement and manufacturability improvement over a wide operation range. <P>SOLUTION: A variable magnetic force magnet 5 is inserted into a magnet inserting hole provided in the center of a magnetic pole 1, and a fixed magnetic force magnet 4 is inserted into magnet inserting holes 3A, 3B disposed asymmetrically with respect to a geometrical center 5A of the variable magnetic force magnet 5. Thus, a magnetic center 1a of the magnetic pole 1 and the geometrical center 5a of the variable magnetic force magnet 5 are configured to be deviated in a circumferential direction. Further, by arranging a plurality of magnetic poles having different deviation amounts side by side in the circumferential direction or in an axial direction, harmonic waves of a voltage induced in stator winding are reduced while mitigating demagnetization of a permanent magnet, the variable magnetic force magnet 5 is irreversibly magnetized by a magnetic field created from a current of armature winding to change a total interlinked magnetic flux amount, thereby enabling variable-speed operation over a wide range with high output. At the same time, high efficiency can be obtained over a wide operation range. <P>COPYRIGHT: (C)2012,JPO&INPIT |
