公开(公告)号：US20180269732A1

公开(公告)日：2018-09-20

申请号：US15612654

申请日：2017-06-02

Applicant: LG ELECTRONICS INC.

Inventor： Wonyong LEE ,  Jeonghwan KIM ,  Soohyun PARK ,  Jihyun AHN ,  Injae LEE

IPC: H02K1/27 ,  H02K21/14

CPC classification number: H02K1/276 ,  H02K2201/06 ,  H02K2213/03

Abstract: An interior permanent magnet type rotor includes: a rotor core having a plurality of slots formed therein, the plurality of slots having a symmetric longitudinal sectional shape; and a plurality of permanent magnets respectively inserted into the plurality of slots, the plurality of permanent magnets having an asymmetric longitudinal sectional shape, wherein each of the plurality of permanent magnets includes: a top surface part; a bottom surface part formed opposite to the top surface part; and first and second side surface parts connecting the top surface part and the bottom surface part, wherein a first vertical part and a second vertical part, which are in contact with side surface parts of the slot, are formed in the first and second side surface parts, respectively.