Patent
Embedded permanent magnet rotary electric machine
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TLDR
In this article, permanent magnet segments are configured such that shapes and directions of orientation thereof have mirror symmetry relative to a plane that passes through a magnetic pole center and that includes a central axis of the rotor core, and that a permanent magnet segment that is further away from the magnetic pole centre in a circumferential direction has a smaller angle of orientation.Abstract:
Permanent magnets that constitute the single magnetic poles are constituted by n permanent magnet segments, the n permanent magnet segments being configured such that shapes and directions of orientation thereof have mirror symmetry relative to a plane that passes through a magnetic pole center and that includes a central axis of the rotor core, and being oriented such that a permanent magnet segment that is further away from the magnetic pole center in a circumferential direction has a smaller angle of orientation, and the permanent magnet segment that is positioned further away from the magnetic pole center in the circumferential direction being produced so as to have an approximately fan-shaped cross-sectional shape in which a radial width is wider than a circumferential width.read more
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Rotary electric machine
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References
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Patent
Permanent magnet rotating electric machine
TL;DR: In this paper, the permanent magnet rotating electric machine includes a rotor core 32C in which two circumferential grooves 32C are formed toward a circular direction of the rotor core near an axial end side of permanent magnet 32B on the outer peripheral surface of the rotational core 32A.
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Patent
Permanent magnet rotating machine
TL;DR: In this article, a rotary shaft 60 having an outside diameter larger than the bore diameter of a rotor 50 is inserted into a main magnetic pole of the rotor 50 and permanent magnets are inserted into the magnet insert hole 51 a 1 to 52 a 3 such that a gap is formed between the permanent magnets 52 a 1, 52 a 2 and the magnet insertion hole 51a 1.