Stator with teeth formed from a soft magnetic powder material

Details Stator with teeth formed from a soft magnetic powder material Stator with teeth formed from a soft magnetic powder material

H - Electricity

02

K

H02K 1/14 (2006.01) H02K 1/08 (2006.01) H02K 1/18 (2006.01) H02K 15/06 (2006.01)

Patent

CA 2337042

A stator core for an electrical machine comprises an annular yoke and plurality of teeth spaced circumferentially on the annular yoke and extending radially therefrom, the spaces between the teeth defining circumferentially spaced winding slots. The teeth are formed as separate components from a soft magnetic powder material. Each tooth (1; 11) has non-decreasing cross-sectional dimensions in a direction towards a distal tip (3; 13) along a length of the tooth corresponding to a winding slot, and has the same or smaller cross-sectional dimensions along a proximal end (4; 14) of the tooth. Thereby, the tooth (1; 11) may be assembled with a section (5; 15) of the annular yoke and is able to receive a coil (7) before the assembling with the yoke.

Le noyau d'un stator de machine électrique comprend un étrier annulaire et plusieurs dents espacées de façon circonférentielle sur l'étrier annulaire à partir duquel elles s'étendent radialement, les espaces entre les dents définissant des fentes pour enroulements à espacement circonférentiel. Les dents sont formées comme des composants séparés dans un matériau magnétique doux en poudre. Chaque dent (1, 11) présente des dimensions transversales non décroissantes dans la direction d'une pointe (3, 13) distale le long de la dent correspondant à une fente pour enroulement, et possède des dimensions transversales égales ou inférieures le long d'une extrémité (4, 14) proximale de la dent. Ainsi, la dent (1, 11) peut être rattachée à une section (5, 15) de l'étrier annulaire et peut loger un enroulement (7) avant son assemblage avec l'étrier.

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