Embedded magnet motor and rotor of embedded magnet motor
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United States of America Patent
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Jun 12, 2018
Issued Date -
Apr 21, 2016
app pub date -
Oct 9, 2015
filing date -
Oct 16, 2014
priority date (Note) -
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Abstract
An embedded magnet motor includes a stator core, a plurality of permanent magnets each having a rectangular cross section, and a rotor core. The stator core and the rotor core define a first air gap being positioned at an intermediate portion of the rotor core, a second air gap being positioned at a first portion corresponding to a first axis of the rotor core, and a third air gap being positioned at a second portion corresponding to a second axis of the rotor core. Because a diameter of the intermediate portion being positioned between the first portion and the second portion of the rotor core is set smaller than a diameter of the first portion and than a diameter of the second portion, the first air gap is set greater than the second air gap and than the third air gap.
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