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Magnetic field and thrust analysis for linear induction motor with lateral displacement(PDF)

[ISSN:1007-449X/CN:23-1 408/TM]

Issue:
2016年04
Page:
64-68
Research Field:
Publishing date:

Info

Title:
Magnetic field and thrust analysis for linear induction motor with lateral displacement
Author(s):
L Gang1 ZENG Di-hui1 ZHOU Tong1 LIU Zhi-ming2 SUN Shou-guang2
 ( 1. School of Electrical Engineering,Beijing Jiaotong University,Beijing 100044,China; 2. School of Mechanical,Electronic and Control Engineering,Beijing Jiaotong University,Beijing 100044,China)
Keywords:
linear induction motor lateral displacement distortion coefficients longitudinal end effects transverse end effects three dimensional finite-element model
PACS:
TM 351; TP 273
DOI:
10. 15938 / j. emc. 2016. 04. 009
Abstract:
The single-sides linear induction motor ( SLIM) has been applied to the metro vehicle. When the vehicle runs on the turning rails,primary is displaced sideways from a symmetrical position. A full 3-D model,which considering the longitudinal and transverse end effects,overhangs of the primary windings and secondary,as well as lateral displacement,is developed. The air-gap flux densities along longitudinal and transverse direction with different lateral displacements are obtained. Then,influences of half-filled slots on the performance of the SLIM are analyzed,and distortion coefficients of the air gap flux density are proposed to calculate the asymmetry. Finally,thrusts of the SLIM are calculated when the asymmetry between the primary and secondary occurred,and the influence of the thrust variation on the train are de-bated.

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Last Update: 2016-06-26