| 简介 |
PROBLEM TO BE SOLVED : To restrict demagnetization of a permanent magnet while hindering a decrease in saturation flux density, in a rotary electric machine in which a permanent magnet and a coil are arranged facing each other.
SOLUTION : A rotary electric machine is provided with a stator core (21) having a plurality of teeth (211) and having slots (213) between the teeth (211). The rotary electric machine is provided with coils (23, 24) wound around the teeth (211) and accommodated in the slots (213). A permanent magnet (22) is provided in a predetermined slot (213) so as to be in contact with the coil (23) in this slot (213). The permanent magnet (22) is a sintered magnet using a rare-earth element, and the coercive field force of the face (S) of it, which is in contact with the coil (23), is made greater than the coercive field force of the interior part thereof.
SELECTED DRAWING : Figure 2
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