外转子型永磁同步电机用铁氧体多极磁环的研制
吕欢剑, 郭德森
Development of Ferrite Multipole Magnetic Ring for External Rotor Permanent Magnet Synchronous Motor
LÜ Huan-jian, GUO De-sen
微特电机 . 2021, (2): 25 -28 .