STATOR FOR A POLYPHASE ELECTRIC MACHINE AND METHOD FOR MANUFACTURING SAME
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Abstract
A stator (16) is proposed for a polyphase electric machine, having a core body (17), which is provided with slots (114), which are situated in the radial direction with respect to an axis of rotation of the electric machine on one side of the core body (17) parallel to the longitudinal axis of the core body (17), having a slot width (bn1, bn2) and a stator yoke (122) being provided on the opposite side, with two slots (114) each being separated from one another by a tooth (116) having a tooth width (bz1, bz2) and extending from a slot base (120) to a tooth head (118), these slots (114) being provided to receive at least one coil winding having a plurality of coils that is electrically connected in series and are manufactured from at least one continuous wire (124) without interruption, the ratio (bz2/hj) of the tooth width (bz2) to the yoke height (hj) at the tooth head (118) being between 0.3 and 0.8 and/or the ratio (bz2/bn2) of the tooth width (bz2) at the tooth head (118) to the slot width (bn2) at the tooth head (118) being between 0.3 and 3, and/or the ratio (mCu(slot)/mCu(total)) of the copper mass of the wire (124) in the slot (114) to the total copper mass of the wire (124) being between 0.43 and 0.55
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Citations
38 Claims
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1-19. -19. (canceled)
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20. A stator for a polyphase electric machine, comprising:
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a core body which, in a radial direction with respect to an axis of rotation of the electric machine, has slots with a slot width on one side of the core body parallel to a longitudinal axis of the core body and is provided on the opposite side with a stator yoke, two slots being respectively separated from one another by a tooth having a tooth width and extending from a slot base to a tooth head, the slots being provided with a plurality of coils connected electrically in series to receive at least one coil winding, the coil winding being manufactured from at least one continuous wire without interruption; wherein at least one of (a) a ratio of the tooth width at the tooth head to the yoke height is between 0.3 and 0.8, (b) a ratio of the tooth width at the tooth head to the slot width at the tooth head is between 0.3 and 3, and (c) a ratio of a copper mass of the wire in the slot to a total copper mass of the wire is between 0.43 and 0.55. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A method for manufacturing a stator for a polyphase electric machine having a core body which, in a radial direction with respect to an axis of rotation of the electric machine, has slots with a slot width on one side of the core body parallel to a longitudinal axis of the core body and is provided on the opposite side with a stator yoke, two slots being respectively separated from one another by a tooth having a tooth width and extending from a slot base to a tooth head, the slots being provided with a plurality of coils connected electrically in series to receive at least one coil winding, the coil winding being manufactured from at least one continuous wire without interruption, at least one of (a) a ratio of the tooth width at the tooth head to the yoke height is between 0.3 and 0.8, (b) a ratio of the tooth width at the tooth head to the slot width at the tooth head is between 0.3 and 3, and (c) a ratio of a copper mass of the wire in the slot to a total copper mass of the wire is between 0.43 and 0.55, comprising:
joining the wires in the slots substantially in the radial direction. - View Dependent Claims (37, 38)
Specification