Magnetic Levitation Permanent Magnet Linear Synchronous Motor Electromagnetic Analysis

2011 ◽  
Vol 383-390 ◽  
pp. 5233-5237
Author(s):  
Yi Peng Lan ◽  
Cheng Jun Li
Keyword(s):  
Mathematical Model ◽  
Permanent Magnet ◽  
Magnetic Levitation ◽  
Levitation Force ◽  
Synchronous Motor ◽  
Linear Motor ◽  
Cnc Machine ◽  
Element Analysis ◽  
Linear Synchronous Motor ◽  
The Mathematical Model

According to the problem of the friction between the mover and the static guide rail in the linear motor drive system of CNC machine tool, this paper proposed the direct magnetic levitation permanent magnet linear synchronous motor to achieve friction-free feed. The mover of the direct magnetic levitation permanent magnet linear motor consists of two sets of windings. One is the thrust winding, which is used to generate electromagnetic thrust, the other is the suspension winding, which is used to generate magnetic levitation force. The mathematical model of the motor’s electromagnetic thrust and levitation force is derived by the Maxwell stress tensor method. Ansoft is used for making finite element analysis of the motor’s electromagnetic thrust and levitation force. The results verified the correctness of the mathematical model. The feasibility of friction-free feed with two-winding direct magnetic levitation permanent magnet synchronous motor is proved.

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.

Tubular Permanent Magnet Linear Synchronous Motor Thrust Optimization

2011 ◽  
Vol 383-390 ◽  
pp. 5640-5647
Author(s):  
Jing Hong Zhao ◽  
Jun Hong Zhang
Keyword(s):  
Permanent Magnet ◽  
Selection Process ◽  
Structural Features ◽  
Synchronous Motor ◽  
Linear Motor ◽  
Design Parameters ◽  
Linear Synchronous Motor ◽  
Parameters Selection ◽  
Motor Design ◽  
Practical Engineering

Detailed discussion design parameters selection process of thrust density optimization about the tubular permanent magnet linear synchronous motor. Analysis of different parameters on the thrust density laws. Two different magnetization forms linear motor is optimized. The optimal design parameters value is obtained. Finally analysis and comparison of the two structural features of linear motor. The motor design guide has practical engineering value.

Control Platform for Tubular Permanent-Magnet Linear Synchronous Motor

2013 ◽  
Vol 300-301 ◽  
pp. 1579-1583
Author(s):  
Peng Yun Song ◽  
Ji Ye Zhang ◽  
Ming Li ◽  
Shuang Wang
Keyword(s):  
Motor Control ◽  
Permanent Magnet ◽  
Closed Loop ◽  
Control Experiment ◽  
Synchronous Motor ◽  
Linear Motor ◽  
Position Sensor ◽  
Intended Target ◽  
Experiment Platform ◽  
Linear Synchronous Motor

In order to study the characteristics of the linear motor, this paper constructed the tubular permanent-magnet linear synchronous motor control experiment platform. Firstly, this paper introduces the structure and principle of the TPMLSM. Secondly, metal bracket is made. Magnetic grid scale is used as position sensor. Three closed-loop controller is constructed. Finally, controller make the linear motor to achieve pre-set target through the programming. The linear motor completed the intended target , and shows excellent characteristics.

Thermal Structure Analysis and Optimization of the Feeding System of the Permanent Magnet Linear Synchronous Motor

2014 ◽  
Vol 492 ◽  
pp. 128-134
Author(s):  
Jun Hai Jiang ◽  
Guo Yun Ye ◽  
Yue Tong Xu
Keyword(s):  
Permanent Magnet ◽  
High Speed ◽  
Thermal Structure ◽  
Response Speed ◽  
Element Model ◽  
Synchronous Motor ◽  
Cnc Machine Tools ◽  
Cnc Machine ◽  
Linear Synchronous Motor ◽  
Temperature Field Model

Because of its high dynamic response speed and acceleration, high rigidity and positioning accuracy, the permanent magnet linear synchronous motor (PMLSM) is able to meet the requirements of high-speed precision CNC machine tools. However, its thermal problems have seriously hampered its development. This paper establishes a PMLSM temperature field model, designs a cooling structure, determines the boundary conditions of the finite element model and conducts computer simulation of the model. The result shows that the designed cooling structure can effectively alleviate the motors thermal problems.

Detent Force Analysis of Permanent Magnet Linear Synchronous Motor for Bearing Grinding Machine Application

2013 ◽  
Vol 416-417 ◽  
pp. 390-394
Author(s):  
Ding Kuan Ye ◽  
Ling Yun Yan ◽  
Ying Quan Liu ◽  
Yun Yue Ye
Keyword(s):  
Permanent Magnet ◽  
Synchronous Motor ◽  
Element Analysis ◽  
Fea Model ◽  
Detent Force ◽  
Linear Synchronous Motor ◽  
Negative Effect ◽  
Main Components ◽  
Grinding Machine ◽  
D Model

The detent force of permanent magnet linear synchronous motor (PMLSM) leads to the thrust ripple, vibration and noise inbearing grinding machines, In order to overcome the negative effect, detent force needs to be decreased. Through theanalytical andfinite element methods, two main components of detent force are investigated in this paper. Firstly, finite element analysis (FEA) and fast Fourier transform (FFT) are employed to analyze the end force. Then athree dimensional (3-D) FEA model of a short secondary PMLSM with skewed poles is erected and the cogging force is studied.Compared with the two dimensional (2-D) model of PMLSM without skewed poles, the detent force is remarkably reduced.

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.

Detection and Analysis of Stator Winding Inter-Turn Short Circuit Fault in Permanent Magnet Linear Synchronous Motor

2012 ◽  
Vol 529 ◽  
pp. 322-326
Author(s):  
Cai Xia Gao ◽  
Chen Hao ◽  
Yue Bing Zhao
Keyword(s):  
Finite Element ◽  
Permanent Magnet ◽  
Short Circuit ◽  
Element Model ◽  
Synchronous Motor ◽  
Stator Winding ◽  
Element Analysis ◽  
Harmonic Content ◽  
Linear Synchronous Motor ◽  
Short Circuit Fault

A two-dimensional finite element model of PMLSM is build based on the finite element analysis software Magnet to research the diagnosis of stator winding inter-turn short circuit fault in PMLSM. The velocity, thrust, the stator current performance curve are obtained by simulation using Magnet when PMLSM is normal and under different extent inter-turn short circuit fault, the harmonic content of speed and thrust are analyzed using Matlab / Simulink , the conclusion that the thrust of the harmonic content is used as the Permanent Magnet Linear Synchronous Motor (PMLSM) stator inter-turn short circuit fault feature is proposed , which provided a basis for detection of stator winding inter-turn short circuit fault in PMLSM.

scholarly journals Optimal design of the rotor geometry of line-start permanent magnet synchronous motor using the bat algorithm

Open Physics ◽  
2017 ◽  
Vol 15 (1) ◽  
pp. 965-970 ◽  
Author(s):  
Łukasz Knypiński
Keyword(s):  
Mathematical Model ◽  
Permanent Magnet ◽  
Permanent Magnet Synchronous Motor ◽  
Bat Algorithm ◽  
Synchronous Motor ◽  
Permanent Magnet Synchronous Motors ◽  
Synchronous Motors ◽  
Basic Language ◽  
Visual Basic Language ◽  
The Mathematical Model

AbstractIn this paper an algorithm for the optimization of excitation system of line-start permanent magnet synchronous motors will be presented. For the basis of this algorithm, software was developed in the Borland Delphi environment. The software consists of two independent modules: an optimization solver, and a module including the mathematical model of a synchronous motor with a self-start ability. The optimization module contains the bat algorithm procedure. The mathematical model of the motor has been developed in an Ansys Maxwell environment. In order to determine the functional parameters of the motor, additional scripts in Visual Basic language were developed. Selected results of the optimization calculation are presented and compared with results for the particle swarm optimization algorithm.

scholarly journals MINIMIZING THE DETENT FORCE IN PERMANENT MAGNET LINEAR SYNCHRONOUS MOTOR FOR DRIVING OF 2D LASER MARKING TABLE

2017 ◽  
Vol 3 ◽  
pp. 174
Author(s):  
Lyubomir Lazov ◽  
Peter Uzunov
Keyword(s):  
Permanent Magnet ◽  
Magnetic Circuit ◽  
Substantial Reduction ◽  
Synchronous Motor ◽  
Linear Motor ◽  
The Finite Element Method ◽  
Movable Part ◽  
Laser Marking ◽  
Detent Force ◽  
Linear Synchronous Motor

In this paper the research results for reducing the detent force in one innovative permanent magnet linear synchronous motor for 2D laser marking system was published. There two methods are used. The first of these methods features the usage of two additional end teeth with chamfers in the magnetic circuit of the movable part. In the second method, the teeth of the ferromagnetic core are with different lengths. As a result of the change of the air gap permeance in both cases substantial reduction of detent force is achieved, in multiples at times. The results obtained are based on modeling and analyzing the linear motor magnetic field by the Finite Element Method (FEM). Provided experimental research of the linear motor prototype proves the correctness of the simulations results.

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