Rotary electric machine using permanent magnet
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United States of America Patent
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Oct 3, 2017
Issued Date -
N/A
app pub date -
Nov 25, 2015
filing date -
May 31, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A permanent magnet type rotary electric machine has a stator, a rotor which is rotatably provided inside the stator, and permanent magnets arranged in a rotor core of the rotor. An angle θ between a straight line connecting the center of the rotor to a middle position between two permanent magnets arranged in the V shape, and a straight line connecting the center of the rotor to an outer circumferential top of one of the permanent magnets has the relation: 0.65<Θ(=θ/(180/P))<0.80 in which P is the number of poles in the rotor. When a rear depth of a slot of the stator core is D, and a burying depth of the permanent magnet in the radial direction of the rotor core is t, D/t=A has the relation: 0.8
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