| 摘要 |
PROBLEM TO BE SOLVED: To prevent a pseudo magnetic pole formed adjacent to a proper magnetic pole in the split portion of a magnet from being detected by a magnetic sensor in a rotary electric machine, including a magnet rotor in which a magnet field system is constituted of parallel anisotropic magnet having the at least one portion split in the circumferential direction, and to provide the magnetic sensor for detecting the magnetic poles of the magnet rotor. SOLUTION: The magnetic sensor 21w is placed at a position where the shortest distance g1 between the detection unit of the magnetic sensor 21w and the magnetic pole of the magnet field system, constructed of the parallel anisotropic magnet m1, m2, is equal to or larger than the shortest distance between the adjoining circumferential ends of the parallel anisotropic magnet m1, m2 measured on the magnetic pole side of the magnet field system. COPYRIGHT: (C)2007,JPO&INPIT
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