Permanent magnet synchronous motor
AssigneeMitsubishi Electric Corporation
InventorAtsushi Matsuoka
Life of this patent
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Abstract
An 8-pole 9-slot permanent magnet synchronous motor includes a stator core including an annular yoke and a plurality of teeth. Each of the plurality of teeth has a winding portion around which a coil is wound. The plurality of teeth include three teeth groups. Each of the three teeth groups includes a first tooth, a second tooth, and a third tooth of the teeth group sequentially arranged in a rotational direction of a rotor and around which coils of one phase are wound. The first tooth, second tooth, and third tooth of each of the three teeth groups are sequentially arranged in the rotational direction of the rotor. A width of the winding portion of the first tooth is narrower than a width of the winding portion of each of the second tooth and the third tooth.
Claims7
A stator core for a permanent magnet synchronous motor having an 8-pole rotor, the stator core including an annular yoke and a plurality of teeth arranged inward of the yoke, apart in a circumferential direction of the yoke, and forming nine slots,
- wherein each of the plurality of teeth has a portion around which a coil is wound,
- wherein the plurality of teeth include three teeth groups,
- wherein each of the three teeth groups includes a first tooth, a second tooth, and a third tooth sequentially arranged in a rotational direction of the rotor and around which coils of one phase are wound, and
- wherein a width of the portion of the first tooth is narrower than a width of the portion of each of the second tooth and the third tooth.
A permanent magnet synchronous motor comprising:
- a stator core including an annular yoke and a plurality of teeth arranged inward of the yoke, apart in a circumferential direction of the yoke, and forming nine slots,
- wherein each of the plurality of teeth has a portion around which a coil is wound,
- wherein the plurality of teeth include three teeth groups,
- wherein each of the three teeth groups includes a first tooth, a second tooth, and a third tooth sequentially arranged in a rotational direction of the rotor and around which coils of one phase are wound, and
- wherein a width of the portion of the first tooth is narrower than a width of the portion of each of the second tooth and the third tooth.
An air-conditioning apparatus comprising a permanent magnet synchronous motor, the permanent magnet synchronous motor including:
- a stator core including an annular yoke and a plurality of teeth arranged inward of the yoke, apart in a circumferential direction of the yoke, and forming nine slots,
- wherein each of the plurality of teeth has a portion around which a coil is wound,
- wherein the plurality of teeth include three teeth groups,
- wherein each of the three teeth groups includes a first tooth, a second tooth, and a third tooth sequentially arranged in a rotational direction of the rotor and around which coils of one phase are wound, and
- wherein a width of the portion of the first tooth is narrower than a width of the portion of each of the second tooth and the third tooth.
Dependencies are inferred from the claim text.