Equivalent Circuit Model of Long Primary Permanent Magnet Linear Synchronous Motor Considering End Effect

2021 ◽  
Author(s):  
Yinhao Mao ◽  
Zhaolong Sun ◽  
Weichang Zhou ◽  
Fengrui Cui
Keyword(s):  
Permanent Magnet ◽  
Equivalent Circuit ◽  
Equivalent Circuit Model ◽  
Synchronous Motor ◽  
Circuit Model ◽  
End Effect ◽  
Linear Synchronous Motor

scholarly journals A nonlinear equivalent circuit model for flux density calculation of a permanent magnet linear synchronous motor

2015 ◽  
Vol 12 (3) ◽  
pp. 359-373
Author(s):  
Reza Ghanaee ◽  
Ahmad Darabi ◽  
Arash Kioumarsi ◽  
Mohammad Baghayipour ◽  
Mohammad Morshed
Keyword(s):  
Permanent Magnet ◽  
Equivalent Circuit ◽  
Analytical Method ◽  
Equivalent Circuit Model ◽  
Synchronous Motor ◽  
Circuit Model ◽  
Magnetic Equivalent Circuit ◽  
Linear Synchronous Motor ◽  
Proposed Model ◽  
Simulation Results

In this paper, a nonlinear magnetic equivalent circuit is presented as an analytical solution method for modeling of a permanent magnet linear synchronous motor (PMLSM). The accuracy of the proposed model is verified via comparing its simulation results with those obtained by two other methods. These two are the Maxwell?s Equations based analytical method and the wellknown finite elements method (FEM). Saturation and any saliency e.g. slotting effects can be considered properly by both nonlinear magnetic equivalent circuit and FEM, where it cannot be taken into account easily by the Maxwell?s Equations based analytical approach. Accordingly, as the simulation results presented in this paper confirm, the proposed nonlinear magnetic equivalent circuit is compatible with FEM regarding the accuracy while it requires very shorter execution time. Therefore, the magnetic equivalent circuit model of the present paper can be considered as a preferable substitute for the time consuming FEM and approximated analytical method built on Maxwell?s Equations in particular when required to be applied for a design optimization problem.

Research on the End Effect Detent Force Reduction of Permanent Magnet Linear Synchronous Motor with Auxiliary Poles One-Piece Structure

2013 ◽  
Vol 416-417 ◽  
pp. 27-32
Author(s):  
He Zhang ◽  
Bao Quan Kou ◽  
Shou Lun Guo ◽  
Hai Lin Zhang ◽  
Yin Xi Jin ◽  
...  
Keyword(s):  
Permanent Magnet ◽  
Synchronous Motor ◽  
Linear Motor ◽  
End Effect ◽  
Detent Force ◽  
Linear Synchronous Motor ◽  
Force Reduction ◽  
The One

In order to minimize the detent force of permanent magnet linear synchronous motor (PMLSM) caused by end effect, a novel auxiliary poles one-piece structure is proposed. Two auxiliary poles are extended directly from two ends of the armature core. And magnetic isolation bridges are set between auxiliary pole and armature core. Compared with the conventional discrete auxiliary poles, the one-piece structure will reduce the manufacture difficulty of PMLSM with auxiliary poles and improve the reliability of linear motor.

Detent Force Modeling and Analysis for Vertical Permanent-Magnet Linear Synchronous Motor Using Equivalent Magnetic Network Method

2011 ◽  
Vol 143-144 ◽  
pp. 148-153 ◽  
Author(s):  
Xiao Zhuo Xu ◽  
Xu Dong Wang ◽  
Hai Chao Feng ◽  
Ji Kai Si
Keyword(s):  
Permanent Magnet ◽  
Equivalent Circuit Model ◽  
Synchronous Motor ◽  
Iron Core ◽  
Modeling And Analysis ◽  
Force Modeling ◽  
Detent Force ◽  
Linear Synchronous Motor ◽  
Calculation Results ◽  
Magnetic Network

This paper investigates the detent force modeling of a slotted iron core type vertical permanent magnet linear synchronous motor (PMLSM) for ropeless elevator applications. Variable network non-linear magnetic equivalent circuit model is established to predict the detent force of PMLSM. The topology structure of equivalent magnetic circuit is developed and the permeances are derived and calculated. The end effect of two end teeth is essential for analysis of detent force and it is focused in the modeling. Magnetic saturation of primary iron-core also be taken into account. In final some 3-D finite-element numerical calculation results are used to validate the feasibility of the proposed method.

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