ROTARY ELECTRIC MACHINE USING PERMANENT MAGNET

摘要

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

主权项

1. A permanent magnet type rotary electric machine comprising:
a stator having an armature coil; a rotor which is rotatably provided inside the stator and which has a rotor core; and permanent magnets arranged in a V shape in the rotor core to counteract a magnetic flux from the armature coil which passes between adjacent magnetic poles of the rotor, wherein 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))<0.80in which P is the number of poles in the rotor,
the number of poles in the rotor is 6, 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