-
公开(公告)号：US11271467B2
公开(公告)日：2022-03-08
申请号：US16979536
申请日：2020-02-27
Applicant: SOUTHEAST UNIVERSITY
Inventor： Wei Hua , Peixin Wang , Gan Zhang , Baoan Wang , Ming Cheng
Abstract: A coaxial double-rotor variable-speed electromagnetic drive includes an external rotor, an end cover, a load shaft, a stator, and an internal rotor, the external rotor, the load shaft, the stator, and the internal rotor being coaxially arranged. The end cover includes a first end cover and a second end cover that are respectively disposed at two ends of the drive, the external rotor is slidably connected to the two end covers separately by bearings, the load shaft is slidably connected to the first end cover and the inner side of the external rotor separately by bearings, the stator is fixed on the inner side of the first end cover and disposed inside the external rotor, air gaps are kept separately between the stator and the internal rotor and between the stator and the external rotor, the internal rotor is sleeved on the load shaft and is disposed inside the stator.
-
公开(公告)号：US11043861B2
公开(公告)日：2021-06-22
申请号：US16345734
申请日：2016-11-11
Applicant: SOUTHEAST UNIVERSITY
Inventor： Wei Hua , Hengliang Zhang , Ming Cheng
Abstract: A magnetic flux switching hub motor having a permanent magnet rotor, includes: a wheel rim, a stator core, an armature winding which is wound on the stator core, and a plurality of rotor units, wherein rotor units are fixed inside the wheel rim, and a rotor unit comprises a permanent magnet and rotor cores which are arranged on two sides of the permanent magnet, the magnetization direction of the permanent magnet being tangential magnetization, and a magnetization direction of each permanent magnet being the same. The motor has the advantages of being high power, and having strong saturation and overload resistance, high reluctance torque, good flux-weakening performance, a broad speed regulation range, a high degree of manufacturing integration, suitability for modular manufacturing processes, and the like.
-
公开(公告)号：US11909297B2
公开(公告)日：2024-02-20
申请号：US17771495
申请日：2021-11-29
Applicant: SOUTHEAST UNIVERSITY
Inventor： Wei Hua , Zhiheng Zhang , Qifan Xu
CPC classification number: H02K7/09 , F16C32/0465
Abstract: A force-balancing magnetic bearing with an adjustable bias magnetic field for a stator permanent magnet motor is provided. The force-balancing magnetic bearing includes four permanent magnetic poles and four electromagnetic poles, wherein a magnetic field energy of the four permanent magnetic poles is sourced from a stator permanent magnet of the stator permanent magnet motor, each permanent magnetic pole is formed by a left permanent-magnet magnetic bridge, a right permanent-magnet magnetic bridge, a magnetic adjusting section, an electromagnetic pole stator, an electromagnetic pole and permanent magnetic pole isolation plate, a permanent-magnet two-side magnetic pole connection section, a left permanent-magnet magnetic pole and a right permanent-magnet magnetic pole, a magnetic flux of each permanent magnetic pole is adjusted by the magnetic adjusting section, and the four electromagnetic poles are adjusted by currents introduced into electromagnetic pole winding coils.
-
公开(公告)号：US11536315B2
公开(公告)日：2022-12-27
申请号：US17770226
申请日：2021-11-29
Applicant: SOUTHEAST UNIVERSITY
Inventor： Wei Hua , Zhiheng Zhang , Qifan Xu
Abstract: The present invention discloses a magnetic bearing of a stator permanent magnet motor with magnetic pole bypasses and a bias force adjusting method thereof, and belongs to the technical field of power generation, power transformation or power distribution. A typical magnetic field loop formed by permanent magnets extending out of stator sections, radial magnetic conduction bridges, circumferential magnetic conduction bridges, magnetic collecting shoes, radial/axial working air gaps and magnetic conduction blocks of radial/axial magnetic field closed main loops is used for designing the magnetic pole bypasses, so as to achieve the distribution of the magnetic field energy with multiple paths and controllable magnetic field strength of the permanent magnets in the stator permanent magnet motor. The present invention further provides a bias magnetic circuit structure. The number of magnetic poles and the magnetic field strength of a bias magnetic field are adjusted by selecting the materials of connecting sections between magnetic collecting blocks and the volume embedded in adjacent magnetic collecting blocks, so as to adjust the bias force of the magnetic pole, the space at an end of a motor winding is used to the greatest extent, the axial length of a magnetic suspension bearing motor system is reduced, the dynamic performance of a rotor is improved, and the objectives of high compactness and high integration level of “a magnetic suspension bearing and a permanent magnet motor system” are achieved.
-
-
-
Search Results
4
records
(took 0.011 seconds)
