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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(shù)領(lǐng)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

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 130, θob is an outer flux barrier angle of the permanent magnet 130, P is the number of magnetic poles of the rotor 120, and S is the number of slots 115 of the stator 110.

The inner flux barrier angle θib of the permanent magnet 130 refers to an angle between two straight lines connecting the closest ends of the two flux barriers 126 and 127 provided at both ends of the permanent magnet 130 to the center C of the rotor 120. In other words, in FIG. 11, the inner flux barrier angle θib of the permanent magnet 130 refers to an angle between a first straight line L1 connecting the center C of the rotor 120 and the right end of the right flux barrier 126 provided at the first end 131 of the permanent magnet 130 and a second straight line L2 connecting the center C of the rotor 120 and the left end of the left flux bather 127 provided at the second end 132 of the permanent magnet 130.

權(quán)利要求

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