Electrical machine element

H - Electricity – 02 – K

Patent

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H02K 1/16 (2006.01)

Patent

CA 2326807

A stator assembly for an electrical machine comprises a core made of a magnetic material. The core has an annular yoke (2) and a plurality of teeth (3) spaced circumferentially on the annular yoke and extending radially therefrom. The spaces between the teeth define circumferentially spaced winding slots (6). A stator winding is carried by the stator core and has coil turns located around the teeth and in the winding slots. Each tooth and a radially adjoining part (4) of the yoke have varying axial dimensions in order to adjust the magnetic flux to an optimal flux density in each part of the magnetic flux path in the stator. The annular yoke (2) may extend axially past the teeth (3) at least at one of the axial sides thereof.

L'invention concerne un ensemble stator pour machine électrique, qui comporte un noyau constitué d'une matière magnétique. Le noyau comporte une culasse (2) annulaire et plusieurs dents (3) espacées sur le pourtour de la culasse annulaire et s'étendant radialement à partir de celle-ci. Les espaces entre les dents définissent des fentes (6) d'enroulement espacées sur le pourtour. Un enroulement de stator est porté par le noyau de stator et comporte des tours de bobinage passant autour des dents et dans les fentes d'enroulement. Chaque dent et chaque partie (4) radialement contiguë de la culasse présentent des dimensions axiales variables pour permettre de régler le flux magnétique à une densité de flux optimale dans chaque partie du trajet de flux magnétique du stator. La culasse (2) annulaire peut s'étendre axialement au-delà des dents (3), au moins sur l'un des côtés axiaux de celles-ci.

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