公开(公告)号：US20220006404A1

公开(公告)日：2022-01-06

申请号：US17289749

申请日：2019-04-08

Applicant: SOUTHEAST UNIVERSITY

Inventor： Hui YANG ,  Guangxu LI ,  Heyun LIN ,  Shukang LV

IPC: H02P21/14 ,  H02P21/22 ,  H02P21/00 ,  H02P21/12

Abstract: A memory motor winding multiplexing control method and system for flux linkage observation. The method comprises the following steps: I: when the magnetization state of a memory motor needs to be adjusted, selecting a flux regulation current reference value according to a rotation speed of the motor; II: by means of current feedback control, driving a direct-current flux regulation winding to generate a flux regulation current so as to adjust the magnetization state of a permanent magnet; III: when the memory motor is operating normally, collecting an induction voltage of the flux regulation winding and extracting an induced electromotive force of the flux regulation winding; and IV: using the induced electromotive force of the flux regulation winding to calculate the flux linkage of the permanent magnet for vector control of the motor.

公开(公告)号：US20210249919A1

公开(公告)日：2021-08-12

申请号：US17264201

申请日：2019-03-22

Applicant: SOUTHEAST UNIVERSITY

Inventor： Hui YANG ,  Hao ZHENG ,  Heyun LIN

IPC: H02K1/27 ,  H02K1/02 ,  H02K1/14 ,  H02K1/18

Abstract: The present invention discloses a built-in hybrid permanent magnet memory motor with local magnetic circuits in parallel, including a hybrid permanent magnet rotor, a stator, armature windings and a rotating shaft. The armature windings are disposed on the stator, and the stator is disposed outside the hybrid permanent magnet rotor. The hybrid permanent magnet rotor includes a rotor core, first permanent magnets, second permanent magnets and V-shaped magnetic barriers. The rotor core is disposed outside the rotating shaft, the V-shaped magnetic barriers are disposed inside the rotor core, the V-shaped magnetic barriers with openings facing outwards are equally distributed in a circumferential direction of the rotor core, the first permanent magnet is disposed in the opening of the V-shaped magnetic barrier, the second permanent magnet is disposed between the two adjacent V-shaped magnetic barriers, a coercivity of the first permanent magnet is greater than a coercivity of the second permanent magnet, and cross sections of the first permanent magnets and the second permanent magnets are in a straight line. According to the present invention, the problem that the size design of the permanent magnet is limited by the space position is solved, and the anti-demagnetization ability of the low-coercivity permanent magnets and the flux weakening ability of the motor are enhanced.