Rotating electrical machine
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United States of America Patent
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Jul 25, 2023
Grant Date -
Aug 26, 2021
app pub date -
Feb 23, 2021
filing date -
Feb 25, 2020
priority date (Note) -
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status (Latency Note)
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Abstract
In an IPM motor according to one aspect of the present disclosure, in a magnet structure installed in a magnet hole, a first soft magnetic body is located outside a first permanent magnet in a radial direction. Since the first soft magnetic body has a higher electrical resistivity than the electrical resistivity of a rotor core, a situation where an eddy current occurs in the first soft magnetic body is suppressed. In the IPM motor, a deterioration in efficiency caused by an eddy current loss is suppressed, so that the efficiency is improved.
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