Thrust ripple optimization and experiment for a permanent magnet linear synchronous motor

Fu, Jianzhong; Xu, Yanliang; Chen, Zichen

doi:10.1007/s11460-006-0028-x

Cited by 3 publications

(2 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[4][5][6][7][8] At present, scholars all over the world have done a lot of work to suppress the thrust fluctuation of a permanent magnet linear motor, but the main scope of work is still limited to the following aspects. Such as gear cutting processing of the motor, 9 changing the width of the motor end cogging, 10 adoption of semiclosed slot, changing the pole arc coefficient, 11 optimizing the primary length, opening the auxiliary slot, 12 adoption of stator skew, and suppression of thrust fluctuation from control strategy etc. There is no method to suppress the motor thrust simultaneously in terms of phase-shifting and displacement.…”

Section: Introductionmentioning

confidence: 99%

A new method of phase-shifting and displacement of unit motor to suppress the thrust fluctuation of linear motor

Zhou

Zhao

Liu

et al. 2021

Advances in Mechanical Engineering

View full text Add to dashboard Cite

Permanent magnet linear motors can cause thrust fluctuation due to cogging and end effects, which will affect the operation stability of the linear motor. In order to solve this problem, a new method of eliminating alveolar force by using phase-shifting and displacement is proposed in this paper. Taking the cylindrical permanent magnet linear motor as an example, the traditional cylindrical permanent magnet linear motor is divided into two unit-motors, and established finite element analysis model of cylindrical permanent magnet linear motor. It is different from other traditional methods, the thrust fluctuation was reduced by both phase-shifting and displacement simultaneously in this paper, and through simulation analysis, it is determined that the thrust fluctuation suppression effect was the best when the cogging distance was shifted by half. Furthermore, a comparative simulation was made on whether the magnetic insulating material was used. The simulation results show that: The method proposed in this paper can effectively suppress the thrust fluctuation of the cylindrical permanent magnet linear motor. And it can be applied to other similar motor designs. Compared with the traditional method of suppressing thrust fluctuation, the mechanical structure and the technological process of suppressing thrust fluctuation used in this method are simpler.

show abstract

Section: Introductionmentioning

confidence: 99%

A new method of phase-shifting and displacement of unit motor to suppress the thrust fluctuation of linear motor

Zhou

Zhao

Liu

et al. 2021

Advances in Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…In [17]- [20], different optimization algorithms are used to optimize the design of synchronous linear motors, and the electromagnetic force fluctuations are improved by optimization to reduce friction and make the stability better.…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of Electromagnetic Force of Hidden—Pole Magnetic Suspension Linear Motor

Sun

Lan

2019

IEEE Access

View full text Add to dashboard Cite

In order to eliminate the frictional resistance of CNC machine feed platform and improve the machining accuracy and surface roughness, the hidden-pole magnetic suspension linear synchronous motor used to drive the CNC machine tool feed platform was studied. According to the special structure and operation mechanism of the hidden-pole magnetic suspension linear motor, the mathematical model of the electromagnetic force of the motor was established firstly. Then the finite element calculation for the air gap magnetic density, back electromotive force and electromagnetic force of two different structures of the motor of the salient pole and hidden pole was carried out by Finite element software, and the harmonic analysis for air gap magnetic density was done. By comparing the electromagnetic forces of the two motors, it is found that the hidden pole has less fluctuation of the electromagnetic force, so it is more suitable for feed platform as a driving component. Finally, Particle swarm optimization is used to optimize the electromagnetic force of the hidden-pole controlled-magnet linear magnetic suspension synchronous motor, which further reduces the fluctuation of the electromagnetic force, and also improves the efficiency of the motor. The results of the experimental prove the effectiveness of the control method. INDEX TERMS Shidden pole linear synchronous motor, magnetic suspension platform, optimization, particle swarm algorithm.

show abstract

Design and Analysis of Permanent Magnet Linear Synchronous Motor with Special Pole Shape

Wang¹,

Cao²,

Feng³

et al. 2013

JCP

View full text Add to dashboard Cite

Permanent magnet linear synchronous motors (PMLSMs), which have great advantages, such as simple structure, high positioning accuracy, good performance, high thrust force density, high dynamic response, are widely used in high precision direct drive field. As a research focus and difficulty, the force ripper and dynamic characteristic of PMLSM is important for its performance. In this paper, the present research status and characteristics of PMLSM is discussed firstly. Then a 16-pole 15-slot PMLSM is built used finite element method (FEM). Based on the finite element model, the thrust force ripple and minimization technologies, the power factor and efficiency of PMLSM with different load, were solved and analyzed, and an optimized model was got. The analysis result of thrust and magnetic flux density shows that through the new geometry of primary tooth shape, named optimized model, can improve the average thrust and reduce thrust fluctuations. The optimized model also has higher the power factor and efficiency. The back EMF of original and optimized model are also compared and discussed.

show abstract

Thrust ripple optimization and experiment for a permanent magnet linear synchronous motor

Cited by 3 publications

References 6 publications

A new method of phase-shifting and displacement of unit motor to suppress the thrust fluctuation of linear motor

A new method of phase-shifting and displacement of unit motor to suppress the thrust fluctuation of linear motor

Optimal Design of Electromagnetic Force of Hidden—Pole Magnetic Suspension Linear Motor

Design and Analysis of Permanent Magnet Linear Synchronous Motor with Special Pole Shape

Contact Info

Product

Resources

About