Laminated core for an electric machine
AssigneeSiemens Aktiengesellschaft
InventorHolger Schunk
Life of this patent
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Abstract
A laminated core for a rotor and/or a stator of a rotating electric machine includes teeth arranged adjacent to one another in a peripheral direction of the laminated core and delimiting slots for accommodating an electrical conductor that forms a winding. A cover unit is arranged on a side of an air gap between the rotor and the stator and delimits the slots in the radial direction. The cover unit has in a region of a respective one of the slots at least two tapering regions which are spaced apart from one another in the peripheral direction of the laminated core, with a material of the cover unit being thinner in the tapering regions in a radial direction of the laminated core than in a region of the cover unit adjoining the tapering regions.
Claims17
A laminated core for a rotor and/or a stator of a rotating electric machine, said laminated core comprising:
- teeth arranged adjacent to one another in a peripheral direction of the laminated core to delimit slots for accommodating an electrical conductor that forms a winding;
- and
- a cover unit arranged on a side of an air gap between the rotor and the stator and delimiting each of the slots in a radial direction, said cover unit having in a region of a respective one of the slots at least two tapering regions which are spaced apart from one another in the peripheral direction of the laminated core, with a material of the cover unit being thinner in the at least two tapering regions in a radial direction of the laminated core than in a region of the cover unit adjoining the at least two tapering regions,
- wherein, in an axial cross-section through the laminated core, the respective slot is delimited on the air gap side by two equally long legs of a notional isosceles triangle having a base with corners of the base being congruent with air-gap-side corners of the respective slot, and with a height of the notional triangle running in parallel with and partially identically to a geometric radial line of gravity of the respective slot in the axial cross-section, and wherein the notional triangle has a tip which points away from the air gap.
A stator for a rotating electric machine, comprising a laminated core, said laminated core comprising teeth arranged adjacent to one another in a peripheral direction of the laminated core to delimit slots for accommodating an electrical conductor that forms a winding, and a cover unit arranged on a side of an air gap between a rotor of the electric machine and the stator and delimiting each of the slots in a radial direction, said cover unit having in a region of a respective one of the slots at least two tapering regions which are spaced apart from one another in the peripheral direction of the laminated core, with a material of the cover unit being thinner in the at least two tapering regions in a radial direction of the laminated core than in a region of the cover unit adjoining the at least two tapering regions, wherein, in an axial cross-section through the laminated core, the respective slot is delimited on the air gap side by two equally long legs of a notional isosceles triangle having a base with corners of the base being congruent with air-gap-side corners of the respective slot, and with a height of the notional triangle running in parallel with and partially identically to a geometric radial line of gravity of the respective slot in the axial cross-section, and wherein the notional triangle has a tip which points away from the air gap.
A rotor for a rotating electric machine, comprising a laminated core, said laminated core comprising teeth arranged adjacent to one another in a peripheral direction of the laminated core to delimit slots for accommodating an electrical conductor that forms a winding, and a cover unit arranged on a side of an air gap between the rotor and a stator of the electric machine and delimiting each of the slots in a radial direction, said cover unit having in a region of a respective one of the slots at least two tapering regions which are spaced apart from one another in the peripheral direction of the laminated core, with a material of the cover unit being thinner in the at least two tapering regions in a radial direction of the laminated core than in a region of the cover unit adjoining the at least two tapering regions, wherein, in an axial cross-section through the laminated core, the respective slot is delimited on the air gap side by two equally long legs of a notional isosceles triangle having a base with corners of the base being congruent with air-gap-side corners of the respective slot, and with a height of the notional triangle running in parallel with and partially identically to a geometric radial line of gravity of the respective slot in the axial cross-section, and wherein the notional triangle has a tip which points away from the air gap.
Dependencies are inferred from the claim text.