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Inferior permanent magnet motor

專利號
US11177704B2
公開日期
2021-11-16
申請人
SAMSUNG ELECTRONICS CO., LTD.（KR Suwon-si）
發(fā)明人
Taeho Yoon; Junseok Kim; Hyungchul Lee; Byoungsoo Ko; Hongseok Kim
IPC分類
H02K1/27; H02K1/14; F25B1/04; H02K1/02; F04D25/06; H02K3/18
技術領域
permanent,magnet,flux,rotor,motor,barriers,magnets,stator,interior,θob
地域： Suwon-si

摘要

An interior permanent magnet motor includes a stator provided with a plurality of slots and a rotor rotatably disposed inside the stator. A plurality of permanent magnets of the same polarity are disposed at equal intervals in a circumferential direction inside the rotor. A plurality of flux bathers are provided on left and right sides of one end of each of the plurality of permanent magnets adjacent to an outer circumferential surface of the rotor. A ratio of a number of slots of the stator to a number of magnetic poles of the rotor is 3:2 or 3:4. The number of permanent magnets provided in the rotor is ? of the number of magnetic poles of the rotor.

說明書

Flux barriers 325, 326, 327, and 328 provided at the left and right sides of both ends of the permanent magnet 330 are the same as the above-described embodiment. Thus, a detailed description thereof is omitted.

Further, the pole arc angle θm of the permanent magnet 330, the flux barriers 325, 326, 327, and 328, and the slots 315 of the stator 310 may be formed to satisfy the following relationship.
θn≤θm<θm+θs/2
θs/2≤θib<θm<θob
θs/2≤θib<θn
θn≤θm<θob
θm<θob<θm+θs
θn=360/P
θs=360/S

Here, θib is an inner flux barrier angle of the permanent magnets 330, θob is an outer flux barrier angle of the permanent magnet 330, P is the number of magnetic poles of the rotor 320, and S is the number of slots 315 of the stator 310.

FIG. 19 is a partially enlarged cross-sectional view illustrating an interior permanent magnet motor according to an embodiment of the disclosure.

Referring to FIG. 19, an interior permanent magnet motor 400 according to an embodiment of the disclosure may include a stator 410 and a rotor 420.

The stator 410 may be formed to be the same as or similar to the stator 10 of the interior permanent magnet motor 1 according to the above-described embodiment, and thus a detailed description thereof is omitted.

權利要求

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