Hysteresis model for finite-element analysis of permanent-magnet demagnetization in a large synchronous motor under a fault condition

2005 ◽  
Vol 41 (6) ◽  
pp. 2118-2123 ◽  
Author(s):  
M. Rosu ◽  
J. Saitz ◽  
A. Arkkio
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnet ◽  
Synchronous Motor ◽  
Hysteresis Model ◽  
Element Analysis

Slot/Pole Ratio Design of Tubular Permanent Magnet Linear Synchronous Motor

2011 ◽  
Vol 179-180 ◽  
pp. 1303-1308
Author(s):  
Guang Hui Wang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnet ◽  
Permanent Magnets ◽  
Synchronous Motor ◽  
Current Analysis ◽  
Key Factors ◽  
Element Analysis ◽  
Linear Synchronous Motor ◽  
Element Technique

In terms of various applications of linear motor, there are different design objectives with varying concerns. In this paper, the objective is to obtain the slot/pole ratio for tubular permanent-magnet linear synchronous motor (TPMLSM). Direct-axis current analysis and finite element technique are utilized to investigate the optimal slot/slot ratio design of the TPMLSM. Based on electrical angle drift of slots between two neighboring permanent magnets, the slot/pole ratio (SPR), one of the key factors in design, is deduced by direct-axis current analysis. In contrast to those experiment methods, the proposed technique is convenient and swift; moreover it is proven that the method is efficient by 2-D axisymmetic finite element analysis.

Research on Permanent Magnet Linear Synchronous Motor with a Special Pole Shape Based on Finite Element Analysis

2011 ◽  
Vol 143-144 ◽  
pp. 48-52
Author(s):  
Xu Dong Wang ◽  
Kai Cao ◽  
Jun Zhu ◽  
Hai Chao Feng ◽  
Xiao Zhuo Xu ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Permanent Magnet ◽  
Synchronous Motor ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Force Profile ◽  
Force Ripple ◽  
Set Up ◽  
Minimum Force

In this paper, a model of unit motor (16p15s) which is used for vertical elevator has been set up. And a modification of the primary geometry has been presented. In the new geometry, pole shoes are affixed to the primary poles. The finite element analysis (FEA) of various width of pole and different width of pole shoe have been carried out in this paper. The results show that the force profile of the proposed PMLSM has been improved. The minimum force ripple occurs in a suitable width of the pole shoes. And the back EMF constant is analyzed, too.

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