In-slot cooling system for an electric machine with hairpin windings
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United States of America Patent
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Sep 19, 2023
Grant Date -
N/A
app pub date -
Dec 23, 2020
filing date -
Dec 23, 2020
priority date (Note) -
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Abstract
In a stator stack an in-slot cooling system that includes: (a) two or more conductors of a hairpin winding provided within each slot in a first group of the slots, each conductor running axially across the stator stack and being at a different predetermined radial distance from an air gap; and (b) adjacent each slot of the first group of slots at the end that is in the vicinity of the air gap, a bridge portion of the laminating material that closes the slot and forms in the stator stack substantially adjacent the conductor having the shortest predetermined distance from the air gap an axial cooling channel that allows a coolant to flow therein without leakage therefrom.
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