Torque ripple minimization in a doubly salient permanent magnet motors by skewing the rotor teeth

2006 ◽  
Vol 304 (1) ◽  
pp. e371-e373 ◽  
Author(s):  
N.K. Sheth ◽  
A.R.C. Sekharbabu ◽  
K.R. Rajagopal
Keyword(s):  
Permanent Magnet ◽  
Torque Ripple ◽  
Permanent Magnet Motors ◽  
Doubly Salient

scholarly journals Torque Ripple Minimization of Doubly Salient Permanent-Magnet Motors

2005 ◽  
Vol 20 (2) ◽  
pp. 352-358 ◽  
Author(s):  
K.T. Chau ◽  
Q. Sun ◽  
Y. Fan ◽  
M. Cheng
Keyword(s):  
Permanent Magnet ◽  
Torque Ripple ◽  
Permanent Magnet Motors ◽  
Doubly Salient

scholarly journals Design of Doubly Salient Permanent Magnet Motors With Minimum Torque Ripple

2009 ◽  
Vol 45 (10) ◽  
pp. 4704-4707 ◽  
Author(s):  
Yu Gong ◽  
K.T. Chau ◽  
J.Z. Jiang ◽  
Chuang Yu ◽  
Wenlong Li
Keyword(s):  
Permanent Magnet ◽  
Torque Ripple ◽  
Permanent Magnet Motors ◽  
Doubly Salient ◽  
Minimum Torque

scholarly journals Analysis of Torque Ripple and Cogging Torque Reduction in Electric Vehicle Traction Platform Applying Rotor Notched Design

Energies ◽  
2018 ◽  
Vol 11 (11) ◽  
pp. 3053 ◽  
Author(s):  
Myeong-Hwan Hwang ◽  
Hae-Sol Lee ◽  
Hyun-Rok Cha
Keyword(s):  
Permanent Magnet ◽  
Torque Ripple ◽  
Field Analysis ◽  
Permanent Magnet Motors ◽  
Primary Methods ◽  
Cogging Torque ◽  
Electric Cars ◽  
Electric Control ◽  
Interior Permanent Magnet ◽  
Rotor Shape

Drive motors, which are used in the drive modules of electric cars, are interior permanent magnet motors. These motors tend to have high cogging torque and torque ripple, which leads to the generation of high vibration and noise. Several studies have attempted to determine methods of reducing the cogging torque and torque ripple in interior permanent magnet motors. The primary methods of reducing the cogging torque involve either electric control or mechanical means. Herein, the authors focused on a mechanical method to reduce the cogging torque and torque ripple. Although various methods of reducing vibration and noise mechanically exist, there is no widely-known comparative analyses on reducing the vibration and noise by designing a notched rotor shape. Therefore, this paper proposes a method of reducing vibration and noise mechanically by designing a notched rotor shape. In the comparative analysis performed herein, the motor stator and rotor were set to be the same size, and electromagnetic field analysis was performed to determine a notch shape that is suitable for the rotor and that generates reasonable vibration and noise.

The Method Pole of Width Modulation Reducing Cogging Torque in Permanent Magnet Motor

2012 ◽  
Vol 433-440 ◽  
pp. 4201-4206
Author(s):  
Yue Jun An ◽  
Wen Qiang Zhao ◽  
Li Ping Xue ◽  
Hong Liang Wen ◽  
Guo Ming Liu
Keyword(s):  
Permanent Magnet ◽  
Torque Ripple ◽  
Experimental Result ◽  
Testing System ◽  
Permanent Magnet Motors ◽  
Permanent Magnet Motor ◽  
Surface Type ◽  
Angle Sensor ◽  
Cogging Torque ◽  
Simulation Results

Cogging torque is one of the most important parameters of permanent magnet motors, which causes torque ripple, vibration and noise. This paper describes the mechanism of cogging torque, introduces several methods of reducing cogging torque and points out the advantage of novel magnet arrayed permanent magnet motor in reducing cogging torque. Ansoft software is used to build the simulation of conventional surface-type permanent magnet motor and novel magnet arrayed permanent magnet motor and to calculate their cogging torque. a cogging torque testing system which included the angle sensor, permanent magnet motor, torque wrenches and other components are tested two different structures motors’ cogging torque .The experimental result is consistent with the simulation results, it shows that the method of novel magnet arrayed permanent magnet motor reducing cogging torque is correct. The new method compare with the same specification on the surface of permanent magnet motor can reduce more cogging torque.

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