Cogging Torque Analysis of a Special Multi-DOF Permanent Magnet Motor

2020 ◽  
Author(s):  
Zheng Li ◽  
Xuze Yu ◽  
Xueting Wang ◽  
Xuanxuan Xing
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Motor ◽  
Cogging Torque ◽  
Torque Analysis

scholarly journals Analysis and Prediction of Cogging Torque and ripples in output Torque of Permanent Magnet Synchronous Motor and Line Start Permanent Magnet Synchronous Motor

2021 ◽  
Vol 12 (3) ◽  
pp. 4586-4595
Author(s):  
Ravisankar B Et.al
Keyword(s):  
Permanent Magnet ◽  
Energy Efficient ◽  
Permanent Magnet Synchronous Motor ◽  
Torque Ripple ◽  
Synchronous Motor ◽  
Permanent Magnet Motor ◽  
Efficient Operation ◽  
Cogging Torque ◽  
Torque Analysis ◽  
Torque Ripples

Permanent magnet (PM) motors are rapidly replacing the squirrel cage induction motors for its energy efficient operation, smooth control and high power density. Although PM Motors are energy efficient, they are inherently affected by cogging torque and torque ripple. Magnetic alignment between teeth of stator and permanent magnet of rotors produce cogging torque. Torque ripple is a dynamic oscillation during steady-steady operation which leads to various mechanical anomalies like vibration, noise and rotor stress. Torque ripple is produced in PM motors because of non-sinusoidal distribution of flux, saturation, improper selection of slots etc., these ill effects will deteriorate the starting and steady-state performance of motors. So it is very vital to make analysis and prediction of cogging torque and torque ripples to make the motor more effective. Now a day's minimizing the torque ripples and cogging torque are gaining importance in PM motor designs. In this proposed work, the cogging torque analysis and torque ripple analysis of permanent magnet motor and line start permanent magnet motor has been done and reported.

Cogging Torque Optimization of Axial Flux Permanent Magnet Motor

2013 ◽  
Vol 49 (5) ◽  
pp. 2189-2192 ◽  
Author(s):  
Dong-Kyun Woo ◽  
Il-Woo Kim ◽  
Dong-Kuk Lim ◽  
Jong-Suk Ro ◽  
Hyun-Kyo Jung
Keyword(s):  
Permanent Magnet ◽  
Permanent Magnet Motor ◽  
Axial Flux ◽  
Cogging Torque

Cogging Torque Analysis of Novel Dual-Rotor Axial Field Flux-Switching Permanent Magnet Machine

2013 ◽  
Vol 416-417 ◽  
pp. 276-280 ◽  
Author(s):  
Li Hao ◽  
Ming Yao Lin ◽  
Da Xu ◽  
Xing He Fu ◽  
Wei Zhang
Keyword(s):  
Permanent Magnet ◽  
Design Parameters ◽  
Original Design ◽  
Axial Field ◽  
Cogging Torque ◽  
Tooth Width ◽  
Rotor Pole ◽  
Torque Analysis ◽  
Slot Opening ◽  
3D Finite Element Method

The cogging torque of a novel dual-rotor axial field flux-switching permanent magnet (DRAFFSPM) machine is investigated in this paper. The analytical equation of the DRAFFSPM machine is deduced. Based on 3D finite element method, the influences of the design parameters on the cogging torque are analyzed. The H-shaped stator tooth with slot chamfer is proposed and the slot opening width and chamfer thickness are optimized to reduce the cogging torque. It shows that the cogging torque is the minimum when the stator tooth width and stator magnet width equal to 8o and 7.5o mech., respectively. The cogging torque can be reduced by ~64% when the rotor pole width is 1.6 times that of the original design. The cogging torque can be reduced by ~80% when the chamfer is added in the stator slot.

Sign in / Sign up

Export Citation Format

Share Document