公开(公告)号：EP4087093A1

公开(公告)日：2022-11-09

申请号：EP20909846.6

申请日：2020-09-30

申请人： Nidec Corporation

发明人： YAN, Guo-Jhih ,  WU, Keng chang ,  WANG, Kuo-Min

IPC分类号： H02K1/27

摘要： An embodiment of the present invention provides a rotor core and a motor including the rotor core. When a rotor yoke is provided with multiple magnetic pole core groups in a circumferential direction and each magnetic pole core group includes a magnetic conductor at its center and multiple permanent magnets around the magnetic conductor, structure becomes compact and reliable as a whole, and thus another mechanical structure for maintaining rigidity of the rotor is not required. The method for manufacturing the magnetic pole core groups facilitates mass production and manufacturing without causing a cumulative error in manufacturing and assembly. The center of each magnetic pole core group is formed of the magnetic conductor, so that the number of magnets to be used can be reduced at the maximum to achieve low cost. Then, the multiple permanent magnets provided around the magnetic conductor enables increasing magnetic flux concentration effect while preventing magnetic flux leakage. Thus, both high efficiency and high performance of the motor can be achieved.

公开(公告)号：EP4020763A1

公开(公告)日：2022-06-29

申请号：EP21217354.6

申请日：2021-12-23

申请人： Nidec Corporation

发明人： SHIH, Pei-Chun ,  HSU, Yu-Wei ,  YEN, Sheng-Chan ,  LUO, Ta-Yin ,  LIN, Hsin-Nan ,  YAN, Guo-Jhih ,  LIU, Cheng-Tsung

IPC分类号： H02K1/24 ,  H02K19/14

摘要： The present application provides a synchronous reluctance motor and an electrical product. The synchronous reluctance motor has a rotor and a stator surrounding the rotor, the rotator has a rotating shaft, and has a plurality of magnetic flux barrier layers arranged radially, the one of the plurality of magnetic flux barrier layers closest to the stator is filled with a conductor, and the one closest to the rotating shaft is a gap.

公开(公告)号：EP3836354A1

公开(公告)日：2021-06-16

申请号：EP19848096.4

申请日：2019-08-06

申请人： Nidec Corporation

发明人： YEN, Sheng-Chan ,  LIN, Hsin-Nan ,  LUO, Ta-Yin ,  YAN, Guo-Jhih ,  HSU, Yu-Wei ,  NGO, Huu-Tich ,  LIU, Cheng-Tsung

IPC分类号： H02K1/27 ,  H02K15/02

摘要： A rotor includes a rotor core that is made of electromagnetic steel sheets rotating around a central axis and laminated in an axial direction, and that has multiple flux barriers penetrating the electromagnetic steel sheets along the axial direction. At least some of the multiple flux barriers are provided with a first penetrating portion and a second penetrating portion arranged in the radial direction, the first penetrating portion housing a magnet and the second penetrating portion housing a conductive non-magnetic conductor.