Title:
FLUX-CONCENTRATED MOTOR
Document Type and Number:
WIPO Patent Application WO/2024/048870
Kind Code:
A1
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. The second mechanical angle refers to an angle of movement to be made by a Hall sensor in order to satisfy a reference electric angle in connection with a flux-concentrated motor comprising a flux-concentrated rotor having multiple bar-type permanent magnets embedded therein and having the same number of poles and PCD as the above flux-concentrated rotor. The third angle refers to an angle between the D-axis and a point of intersection between the PCD of the Hall sensor and a first virtual line connecting transverse centers of the arc-type permanent magnets in the longitudinal direction of the arc-type permanent magnets.
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Inventors:
KIM JAEHO (KR)
HWANG HONGSIK (KR)
MIN YOUNGGEUN (KR)
LEE JIWAN (KR)
HA KYUNGHO (KR)
HWANG HONGSIK (KR)
MIN YOUNGGEUN (KR)
LEE JIWAN (KR)
HA KYUNGHO (KR)
Application Number:
PCT/KR2023/000308
Publication Date:
March 07, 2024
Filing Date:
January 06, 2023
Export Citation:
Assignee:
LG ELECTRONICS INC (KR)
International Classes:
H02K1/276; H02K11/215
Foreign References:
| JP2021184700A | 2021-12-02 | |||
| CN210258681U | 2020-04-07 | |||
| KR20140022913A | 2014-02-25 | |||
| US20200161939A1 | 2020-05-21 | |||
| KR20100068848A | 2010-06-24 |
Attorney, Agent or Firm:
ROYAL PATENT & LAW OFFICE (KR)
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