US 12,665,455 B2Granted

Flux concentrate type motor

AssigneeLG Electronics Inc.

InventorsYounggeun Min, Jaeho Kim, Hongsik Hwang, Kyungho Ha

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Abstract

A flux concentrate type motor includes a rotor core including an inner diameter portion core, a plurality of outer diameter portion cores, and a plurality of bridges connecting the plurality of outer diameter portion cores to the inner diameter portion core; and a plurality of arc type permanent magnets each inserted between two adjacent outer diameter portion cores. A first angle θ1 formed between a first extension line connecting a center of the arc type permanent magnet and a center of the inner diameter portion core and a second extension line connecting a center of an outer arc of the outer diameter portion core and the center of the inner diameter portion core may satisfy: θ1=k1×PA (k1 is 0.16 to 0.55, and PA=360°/(2×P(a number of pole of the permanent magnet)), where the first angle θ1 may be between 4° and 10°.

Claims20

Dependent claims

A flux concentrate type motor comprising:

a rotor core including an inner diameter portion core, a plurality of outer diameter portion cores, and a bridge connecting the plurality of outer diameter portion cores to the inner diameter portion core;
and
an arc type permanent magnet inserted between two adjacent outer diameter portion cores of the plurality of outer diameter portion cores,
wherein a first angle θ1 defined between a first extension line and a second extension line satisfies E(1):
θ1
=
k
⁢
1
×
PA
,
(
1
)
PA
=
360
⁢
°
/
(
2
×
P
)
,
where k1 is 0.16 to 0.55, and P is a number of pole of the arc type permanent magnet,
wherein the first extension line connects a center of each of the arc type permanent magnet with a center of the inner diameter portion core, and
wherein a second extension line connects a center of an outer arc of each of the plurality of outer diameter portion cores with the center of the inner diameter portion core.

27 more elements

Dependencies are inferred from the claim text.