| 摘要 |
<P>PROBLEM TO BE SOLVED: To greatly reduce cogging torque in a permanent magnet type synchronous motor. <P>SOLUTION: In a permanent magnet type synchronous motor subjected to a skew of the stage number by which a fundamental wave determined by the least common multiple of the number of poles and the number of slots is divided into a plurality of waves, a nonmagnetic substance which prevents leakage of magnetic flux between each stages is interposed between each stages of the skew. Thereby, the fundamental wave of cogging torque can be surely canceled and the cogging torque can be greatly reduced. <P>COPYRIGHT: (C)2013,JPO&INPIT |
