US 11,990,793 B2
Vernier permanent magnet motor with stator having coded auxiliary teeth
Dawei Li, Hubei (CN); Li Fang, Hubei (CN); Xiang Ren, Hubei (CN); and Ronghai Qu, Hubei (CN)
Assigned to HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Hubei (CN)
Appl. No. 17/765,847
Filed by HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY, Hubei (CN)
PCT Filed Jan. 21, 2021, PCT No. PCT/CN2021/072975
§ 371(c)(1), (2) Date Apr. 1, 2022,
PCT Pub. No. WO2022/095282, PCT Pub. Date May 12, 2022.
Claims priority of application No. 202011227689.3 (CN), filed on Nov. 9, 2020.
Prior Publication US 2023/0336039 A1, Oct. 19, 2023
Int. Cl. H02K 1/17 (2006.01); H02K 1/14 (2006.01)
CPC H02K 1/17 (2013.01) [H02K 1/146 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A vernier permanent magnet motor with a stator having coded auxiliary teeth, comprising a stator and a rotor that are coaxially sleeved, wherein an air gap is formed between the stator and the rotor,
coded auxiliary tooth structures are provided on a side surface in the stator close to the air gap, and first permanent magnets are provided on part of the coded auxiliary tooth structures,
a plurality of pairs of second permanent magnets and ferromagnets are arranged around a side surface in the rotor close to the air gap, and the second permanent magnets and the ferromagnets are arranged in an alternating manner,
wherein the first permanent magnets and the ferromagnets are configured to generate a first magnetic field, the second permanent magnets and the coded auxiliary tooth structures are configured to generate a second magnetic field, and magnetic fields formed by superposition of the first magnetic field and the second magnetic field are working magnetic fields of the vernier permanent magnet motor.