The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지
DOI QR코드

DOI QR Code

A Study on Transient Analysis of Linear Induction Motor with Ununiform Airgap for Shallow-depth Underground Train

저심도철도용 선형유도전동기의 공극 불균일 과도특성 분석 연구

  • Lee, Hyung-Woo (Dept. of Railway Vehicle System Engineering, Korea National University of Transportation) ;
  • Park, Chan-Bae (Advanced traction and noncontact feeding system research team, Korea Railroad Research Institute) ;
  • Won, Sunghong (Dept. of Electrical System Engineering, Dongyang Mirae University)
  • Received : 2013.01.02
  • Accepted : 2013.01.28
  • Published : 2013.05.01
Download PDF
⟨ Previous Next ⟩

Abstract

This paper presents an parallel type Linear Induction Motor with ununiform airgap for a shallow-depth underground train with 100‰ grade and 15 m curvature. This parallel type LIM has enough gradability but has inherently ununiform airgap between center and end parts. Consequently, performance when the train passes curved section should be considered with transient analysis. Moreover, general parallel operation, 1C2M which is usually used for train operation, deteriorates LIM performance because of different line velocity between inner and outer LIMs. Transient analysis has many problems such as huge model, lots of meshes, very long calculation time, truncation error and so on. This paper has presented a novel technique using equivalent linear rotating model in order to solve these problems and has analyzed parallel type LIM by using the proposed technique. Finally, LIM performance according to independent operating control has been investigated.

Keywords

References

  1. Japan Subway Association, "Linear Metro System," pp.1-28, 2004.
  2. Hyung-Woo Lee, Sung Gu Lee, Chanbae Park and Hyun-June Park, "Characteristic Analysis of a Linear Induction Motor for a Lightweight Train according to Various Secondary Schemes," International Journal of Railway, vol.1, no.1, pp.6-11, 2008.
  3. Sakae Yamamura, "Theory of linear induction motors," University of Tokyo Press, 1978.
  4. I. Boldea and S. A. Nasar, "Linear motion electromagnetic devices," Taylor & Francis, 2001.
  5. T. Hirasa, S. Ishikawa and T. Yamamuro, "Equivalent circuit of linear induction motors with end effect taken into account," Electrical Engineering in Japan, vol.100, no.2, pp.65-71, 1980. https://doi.org/10.1002/eej.4391000210
  6. T. Higuchi, S. Nonaka and M. Ando, "On the design of high-efficiency linear induction motors for linear metro," Electrical Engineering in Japan, vol.137, no.2, pp.36-43, 2001.
  7. H. Mosebach, "The effects of finite length and width in linear induction motors for both the short primary and the short secondary types," Ph.D dissertation (in German), Technical Technical university of Braunschweig, Germany, 1972.
  8. H. Lee, C. Park, and B. Lee, "Thrust Performance Improvement of a Linear Induction Motor," Journal of Electrical Engineering & Technology, vol. 6, no. 1, pp.81-85, 2011. https://doi.org/10.5370/JEET.2011.6.1.081
  9. D. Im, H. Kim, C. Lee, and S. Park, "Design of single-sided linear induction motor using finite element method and SUMT," July, Conf.on Korean institute of Electrical Engineers, pp.503-505, 1992.