Magnetic field and thrust analysis of the U-channel air-core permanent magnet linear synchronous motor

2016 ◽  
Author(s):  
Xiao Liu ◽  
Shoudao Huang
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Synchronous Motor ◽  
Air Core ◽  
Linear Synchronous Motor

scholarly journals Detent Force Reduction in Permanent Magnet Linear Synchronous Motor Base on Magnetic Field Similarity Method

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 57341-57348 ◽  
Author(s):  
Chunyuan Liu ◽  
Huimin Gao ◽  
Yuansheng Xiong ◽  
Shigui Zhou ◽  
Wenzhen Fu
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Synchronous Motor ◽  
Detent Force ◽  
Linear Synchronous Motor ◽  
Force Reduction ◽  
Similarity Method ◽  
Field Similarity

scholarly journals End Effect Analysis of a Slot-Less Long-Stator Permanent Magnet Linear Synchronous Motor

Symmetry ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1939
Author(s):  
Yue Zhou ◽  
Wenjun Zong ◽  
Qiang Tan ◽  
Zhenjiang Hu ◽  
Tao Sun ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Synchronous Motor ◽  
End Effect ◽  
Flux Linkage ◽  
Effect Analysis ◽  
Linear Synchronous Motor ◽  
Primary Origin ◽  
Left And Right ◽  
Air Gap Magnetic Field

The implications of the end effect for flux linkage and thrust ripple in a slot-less long-stator permanent magnet linear synchronous motor (LSPMLSM), are analyzed in this paper. Since it is affected by the end effect, the air-gap magnetic field density under the end permanent magnet is different from that under the non-end permanent magnet, leading to asymmetry in the thrust ripple. For this reason, we establish a dynamic permanent magnet flux linkage model, which proves that the end effect leads to sub-harmonics in the permanent magnet flux linkage. The motor’s magnetic field distribution in the left and right parts is symmetrical. A thrust model taking into account the flux linkage sub-harmonics is established, from which the amplitude and period of the thrust ripple caused by the end effect can be calculated. There is no detent force for the slot-less LSPMLSM, and the end effect is the primary origin of the motor thrust ripple. In order to suppress the end effect, a method of increasing the end iron length is proposed, as a result of which the sub-harmonics in the flux linkage and the motor thrust ripple are effectively suppressed. Experimental and simulation results verify the results of this paper.

Characteristic and Magnetic Field Analysis of a Novel Ironless Halbach Permanent Magnet Linear Synchronous Motor

2013 ◽  
Vol 416-417 ◽  
pp. 149-155
Author(s):  
Lu Zhang ◽  
Bao Quan Kou ◽  
Bin Chao Zhao ◽  
Feng Xing
Keyword(s):  
Magnetic Field ◽  
Permanent Magnet ◽  
Synchronous Motor ◽  
Field Analysis ◽  
Magnetic Flux Density ◽  
Linear Synchronous Motor ◽  
Halbach Array ◽  
Magnetic Field Analysis ◽  
Magnetization Intensity ◽  
Flux Density Distribution

This paper proposes an ironless permanent magnet linear synchronous motor (ILPMLSM) with a novel Halbach array. The magnetic flux density distribution of the Halbach array is solved analytically by using the equivalent magnetization intensity method. The expressions of no-load back-EMF and electromagnetic thrust are obtained. All of the results are verified by finite element method and they are coincide very well.

Sign in / Sign up

Export Citation Format

Share Document