Shape optimization of rotor pole in spoke type permanent magnet motor for reducing partial demagnetization effect and cogging torque

2007 ◽  
Author(s):  
Kyu-Yun Hwang ◽  
Sang-Bong Rhee ◽  
Jae-Sung Lee ◽  
Byung-I1 Kwon
Keyword(s):  
Shape Optimization ◽  
Permanent Magnet ◽  
Permanent Magnet Motor ◽  
Cogging Torque ◽  
Rotor Pole

Magnetic pole shape optimization of permanent magnet motor for reduction of cogging torque

1997 ◽  
Vol 33 (2) ◽  
pp. 1822-1827 ◽  
Author(s):  
Chang Seop Koh ◽  
Hee Soo Yoon ◽  
Ki Woong Nam ◽  
Hong Soon Choi
Keyword(s):  
Shape Optimization ◽  
Permanent Magnet ◽  
Magnetic Pole ◽  
Permanent Magnet Motor ◽  
Cogging Torque

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.

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