Abstract: A flux-concentrated motor according to an embodiment of the present specification comprises: a flux-concentrated rotor having multiple arc-type permanent magnets embedded therein, each arc-type permanent magnet comprising an inner diameter portion formed with a first curvature, an outer diameter portion formed with a second curvature, and a connecting portion for connecting an end of the inner diameter portion to an end of the outer diameter portion; and a printed circuit board having a Hall sensor for identifying the position of the arc-type permanent magnets. In a state in which the flux-concentrated rotor is D-axis aligned, the Hall sensor is positioned on a pitch circle diameter (PCD) of the Hall sensor in a position shifted from the D-axis by a first mechanical angle, and the first mechanical angle is the sum of second and third mechanical angles.

Abstract: A flux concentrate type rotor may include a shaft; a rotor core; and an arc type permanent magnet having an inner diameter portion and an outer diameter portion. The rotor core includes an annular ring-shaped inner diameter portion core having a shaft through hole, a plurality of outer diameter portion cores arranged along a circumferential direction of the inner diameter portion core on an outer circumferential surface of the inner diameter portion core, and spaced apart from each other to form permanent magnet insertion portion, and a plurality of bridges arranged along the circumferential direction of the inner diameter portion core to correspond to each of the outer diameter portion cores, and connect each of the outer diameter portion cores to the inner diameter portion core. The outer diameter portion core has a first cutout portion positioned at a lower end.

Abstract: A flux concentrate type rotor 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. Each of the plurality of bridges includes a first straight portion extending in a radial direction of the rotor core, and a first angle ?1 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 the first straight portion of the bridge and the center of the inner diameter portion core satisfies: ?1=5.75°±4°.

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 ?1 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: ?1=k1×PA (kl is 0.16 to 0.55, and PA=360°/(2×P(a number of pole of the permanent magnet)), where the first angle ?1 may be between 4° and 10°.

Abstract: A flux concentrate type rotor may include a shaft; a rotor core; and an arc type permanent magnet having an inner diameter portion and an outer diameter portion. The rotor core includes an annular ring-shaped inner diameter portion core having a shaft through hole, a plurality of outer diameter portion cores arranged along a circumferential direction of the inner diameter portion core on an outer circumferential surface of the inner diameter portion core, and spaced apart from each other to form permanent magnet insertion portion, and a plurality of bridges arranged along the circumferential direction of the inner diameter portion core to correspond to each of the outer diameter portion cores, and connect each of the outer diameter portion cores to the inner diameter portion core. The outer diameter portion core has a first cutout portion positioned at a lower end.