Research on Position Identification of Long Stator Linear Synchronous Motor Based on Sliding Mode Observer

Wenqing MEI; Yonghui NAN; Wu LIAO; Yuliang WEN; Anfeng ZHAO

doi:10.13890/j.issn.1000-128x.2020.01.016

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Research on Position Identification of Long Stator Linear Synchronous Motor Based on Sliding Mode Observer

Research & Development | 更新时间：2021-12-10

- Research on Position Identification of Long Stator Linear Synchronous Motor Based on Sliding Mode Observer
- Electric Drive for Locomotives Issue 1, Pages: 79-84(2020)
- 作者机构：
  
  1.中车株洲电力机车研究所有限公司，湖南　株洲　412001
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2020.01.016
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Wenqing MEI, Yonghui NAN, Wu LIAO, et al. Research on Position Identification of Long Stator Linear Synchronous Motor Based on Sliding Mode Observer. [J]. Electric Drive for Locomotives (1):79-84(2020)
DOI：

Wenqing MEI, Yonghui NAN, Wu LIAO, et al. Research on Position Identification of Long Stator Linear Synchronous Motor Based on Sliding Mode Observer. [J]. Electric Drive for Locomotives (1):79-84(2020) DOI： 10.13890/j.issn.1000-128x.2020.01.016.

摘要

基于长定子直线同步电机(LSLSM)的磁浮列车在中高速运行时，传统的车载位置传感器无法准确获取电机位置信息，并且位置信息易受到干扰，为此提出基于滑模观测器的位置辨识方法。在分析滑模观测器对定子电阻、,d,轴电感和,q,轴电感参数敏感性基础上，采用一种基于,q,轴电感校正的LSLSM位置辨识方法，可提高位置观测精度和系统可靠性。通过数字仿真和磁浮试验线验证了所提方法的正确性。

Abstract

When the maglev train runs at medium and high speed based on the long stator linear synchronous motor (LSLSM), the position information of the motor can’ t be accurately obtained by the traditional on-board position sensor, and the position information is susceptible to interference. A position identification method based on sliding mode observer was proposed. Based on the analysis of the sensitivity of stator resistance,d,-axis inductance and ,q,-axis inductance of sliding mode observer, a position identification method of LSLSM based on ,q,-axis inductance correction was provided, which could improve the position observation accuracy and system reliability. The correctness of the proposed method was verified by digital simulation and magnetic levitation test line.

关键词

高速磁浮长定子直线同步电机滑模观测器位置辨识定子磁链仿真

Keywords

high-speed maglevLSLSMsliding mode observerposition identificationstator fluxsimulation

references

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