Cooling structure of rotary electric machine and rotary electric machine
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United States of America Patent
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Sep 22, 2020
Grant Date -
Aug 22, 2019
app pub date -
Feb 15, 2019
filing date -
Feb 21, 2018
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A cooling structure of a rotary electric machine for power generation which includes a rotor and a stator includes a stator core which is formed in an annular shape to surround the rotor and has a plurality of slots arranged in a circumferential direction and extending from one end to the other end in a center axis direction, a conductor which is disposed in the slots and has a protruding portion protruding from the slots in the center axis direction, a cooling unit which cools the protruding portion. Opening portions of the slots are formed in an inner peripheral surface of the stator core, and the opening portions extend toward an upstream side in a rotation direction of the rotor at a time of regeneration from ends on the protruding portion side toward intermediate portions in the center axis direction.
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