| 摘要 |
<p>PROBLEM TO BE SOLVED: To allow for increase in the number of flux interlinking with an armature coil.SOLUTION: An electromagnetic induction device has such a relationship, in a plane parallel with the magnetization direction of permanent magnets 23, 27, that the ratio of the cross-sectional area aof a cavity between the center line II of a field cavity 24 and a permanent magnet array 22 and the cross-sectional area aof a cavity between the center line II of a field cavity 24 and a permanent magnet array 26 is substantially equal to the ratio of the cross-sectional area Aof a permanent magnet array 22 and the cross-sectional area Aof a permanent magnet array 26. Preferably, the cross-sectional area (a+a) of the cavity 24 is 1.2-2.0 of the average value of the cross-sectional area Aof a permanent magnet array 22 and the cross-sectional area Aof a permanent magnet array 26.</p> |
