Research on the influence of trapezoidal magnetization of bonded magnetic ring on cogging torque

In this article, the influence of trapezoidal magnetization method on cogging torque of permanent magnet motor is studied. First, the structure is analyzed by analytical method to explain its mechanism of reducing cogging torque. Then, in order to verify the effectiveness of the formula, a six-slot...

Full description

Saved in:
Bibliographic Details
Published in:Open Physics 2023-04, Vol.21 (1), p.1332-40
Main Authors: Zhang, Ze, Wang, Zilong, Yu, Juntao, Luo, Yang, Yan, Wenlong, Yang, Yuanfei, Hu, Tengfei, Yu, Dunbo, Wang, Li
Format: Article
Language:English
Subjects:
axial electromagnetic force
back EMF
cogging torque
finite element analysis
trapezoidal magnetic pole
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this article, the influence of trapezoidal magnetization method on cogging torque of permanent magnet motor is studied. First, the structure is analyzed by analytical method to explain its mechanism of reducing cogging torque. Then, in order to verify the effectiveness of the formula, a six-slot four-pole motor is introduced for finite element analysis. Through comparison of the original structure motor, the magnet skew structure motor, and the trapezoidal magnetic pole structure motor, it demonstrates that the trapezoidal magnetic pole structure motor can effectively reduce the Cogging torque and does not produce additional axial electromagnetic force. Finally, a magnetizing fixture with a trapezoidal magnetic pole structure is made to magnetize the magnetic ring. The magnetized magnetic ring is installed on the motor, and the Cogging torque, Back EMF, , are tested. The test results are in good agreement with the simulation results. This method can be used to optimize the cogging torque of the permanent magnet motor.
ISSN:2391-5471
2391-5471
DOI:10.1515/phys-2022-0223