Robust adaptive numerical compensation for friction and force ripple in permanent-magnet linear motors

2002 ◽  
Vol 38 (1) ◽  
pp. 221-228 ◽  
Author(s):  
K.K. Tan ◽  
S.N. Huang ◽  
T.H. Lee
Keyword(s):  
Permanent Magnet ◽  
Linear Motors ◽  
Robust Adaptive ◽  
Force Ripple

A New Linear Double Salient Permanent Magnet Motor with Complementary Winding

2013 ◽  
Vol 416-417 ◽  
pp. 115-120
Author(s):  
Ming Cheng ◽  
Rui Wu Cao ◽  
Wei Hua ◽  
Xin Wang
Keyword(s):  
Permanent Magnet ◽  
Thrust Force ◽  
Urban Rail Transit ◽  
Static Characteristics ◽  
Permanent Magnet Motor ◽  
Linear Motors ◽  
Urban Rail ◽  
Fair Comparison ◽  
Force Ripple ◽  
Novel Structures

In this paper, two novel structures of linear double salient permanent magnet (LDSPM) motor having magnets and armature windings in primary are proposed and compared. Firstly, the design principles of both motors are presented. Then, for a fair comparison, two motors are designed based on the same primary dimensions including the slot area, teeth number, pole pitch, permanent magnet volumes and coils number per phase, while the stator pole pitch and the primary structure are different. Finally, the configurations and static characteristics of both motors are critically compared based on finite element (FE) analysis. The results indicate that the proposed topology can avoid the asymmetry of back-EMF waveforms and reduce cogging force and thrust force ripple. Also, the proposed primary permanent magnet linear motors are suitable for the longer stator application such as urban rail transit (URT).

Force Ripple and Magnetic Unbalance Reduction Design for Doubly Salient Permanent Magnet Linear Synchronous Motor

2011 ◽  
Vol 47 (10) ◽  
pp. 4207-4210 ◽  
Author(s):  
Shi-Uk Chung ◽  
Ji-Won Kim ◽  
Byung-Chul Woo ◽  
Do-Kwan Hong ◽  
Ji-Young Lee ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Synchronous Motor ◽  
Linear Synchronous Motor ◽  
Doubly Salient ◽  
Force Ripple
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