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A Study on Improvement of Operation Efficiency of Magnetic Levitation Train Using Linear Induction Motor
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Type
Academic journal
Author
Sang Uk Park (Konkuk University) Chan Yong Zun (Konkuk University) Doh-Young Park (Korea Institute of Machinery & Materials) Jaewon Lim (Korea Institute of Machinery & Materials) Hyung Soo Mok (Konkuk University)
Journal
The Korean Society For Railway International Journal of Railway Vol.9 No.2
Published
2016.12
Pages
41 - 45 (5page)

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A Study on Improvement of Operation Efficiency of Magnetic Levitation Train Using Linear Induction Motor
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In this paper, a study on the efficiency improvement of the magnetic levitation train using the LIM (Linear Induction Motor) was presented. The maglev train has the advantage of being environmentally friendly since much less noise and dust is produced. However, due to structural limitation, compared to a rotating induction motor, linear induction motor, the main propulsion engine of the maglev train has a relatively greater air gap and hence has the lower operation efficiency. In this paper, the relationship between the operating condition of the train and the slip frequency has been investigated to find out the optimum slip frequency that might improve the efficiency of the magnetic levitation train with linear induction motor. The slip frequency is variable during the operation by this relationship only within a range that does not affect the levitation system of the train. After that, the comparison of the efficiency between the conventional control method with the slip frequency fixed at 13.5[Hz] and the proposed method with the slip frequency variable from 9.5[Hz] to 6.5[Hz] has been conducted by simulation using Simplorer. Experiments of 19.5[ton] magnetic levitation trains owned by Korea Institute of Machinery and Materials were carried out to verify the simulation results.
#Linear induction motor #Propulsion control #Slip frequency #railroad car #ATO #Auto train operation

Contents

Abstract
1. Introduction
2. Structure and Operation Characteristics of Maglev Train
3. Simulation
4. Conclusion
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