| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a permanent magnet motor for preventing torque ripples caused by a difference in strength of magnetic force of permanent magnets by adjusting a magnetic flux amount of the permanent magnets according to a load to be driven in a simple configuration using permanent magnets selected for each magnetic pole from a plurality of types of permanent magnets having different coercive forces. <P>SOLUTION: A rotor core 13 of a rotor 5 has a plurality of magnet insertion holes 17 in the circumferential direction. The two permanent magnets 14 and 15 selected for each magnetic pole are inserted into the magnet insertion holes 17, respectively. A magnetic flux flowing path 22 is formed so as to be positioned on a relative moving locus 21 of hall ICs H1-H3, on a part between the adjacent permanent magnets 14, 15 in the rotor core 13. <P>COPYRIGHT: (C)2011,JPO&INPIT |
