| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a permanent-magnet rotating electrical machine capable of decreasing a maximum value of a line voltage without decreasing a torque constant. <P>SOLUTION: A protrusion part 31 protruding over a prescribed section in a circumferential direction is formed at magnetic poles 23A and 23B in an outer peripheral part of a rotor 20. Assuming that θ1 is a rotor magnetic pole open angle and θ2 is a protrusion part open angle centering around a magnetic pole center P, the protrusion part 31 is formed so as to satisfy (4/9)θ1<θ2<(2/3)θ1 in electrical degrees. <P>COPYRIGHT: (C)2012,JPO&INPIT |
