| 摘要 |
PROBLEM TO BE SOLVED: To increase the 'maximum energy product' and 'residual magnetic flux density' of an excitation permanent magnet, as much as possible. SOLUTION: A plurality of excitation permanent magnets, formed into a flat tip shape, are used for utilization of magnetic substances with high performance. By storing them in a polygonal magnetic case after polarization, the excitation permanent magnets with high magnetism can be produced. A synchronous generator of high efficiency and high performance can then be provided.
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