| 简介 |
PROBLEM TO BE SOLVED : To provide a motor which is reduced in eddy current loss or loss resulting from the eddy current by applying a high resistance magnet containing a fluorine compound.
SOLUTION : In a motor employing a magnet field, the magnetic flux of the gap between a stator and a rotor is made to be 0.1 T or the magnet resistance is made to be 0.2 mΩcm or more to realize loss reducing effect, by using the high resistance magnet partially insulated by a layer containing a fluorine compound including at least one element of either a rare-earth element or an alkali element. Thereby, the loss reduction mainly due to the reduction in eddy current loss can be realized, and the loss reduction to a circuit high in frequency such as a rotating machine using a magnetic circuit high in the magnetic flux or MRI or the like can also be realized.
COPYRIGHT : (C)2006, JPO&NCIPI |
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