JOURNAL BROWSE
Search
Advanced SearchSearch Tips
A Study on Acceleration Performances of EMUs According to Wheel Diameter Changes
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
A Study on Acceleration Performances of EMUs According to Wheel Diameter Changes
Min, Seung Kon; Ko, Jeong Seo;
  PDF(new window)
 Abstract
The diameter of a new wheel in EMUs is 860mm and it can be used up to 773mm. To obtain an predefined acceleration despite wheel diameter changes, the tractive efforts of the vehicles must be properly controlled. In the commencement of this study, acceleration tests were performed for empty EMUs when the wheel diameter was changed to 860mm, 820mm and 780mm, respectively. In order to deal with more complicated running conditions, we developed dynamic simulation models of the EMUs using VI-Rail, and simulated the models in empty and full passenger loads, respectively. Using the simulation results, we analyzed the gradient of time-velocity graphs by considering the changes of the total weight vehicles and moment of inertia of the wheelsets as well as tractive effort according to the wheel diameter changes. As the results, it was found that there are significant differences in acceleration performances according to the wheel diameters and the payloads of EMUs. In case of 860mm which is the maximum wheel diameter, the test & simulation results show that the vehicle couldn't reach the predefined acceleration, 3.0km/h/s, due to lack of tractive effort.
 Keywords
EMU;wheel diameter;motor torque;tractive effort;acceleration rate;
 Language
Korean
 Cited by
 References
1.
M. S. Kim et al., "Study of the Metropolitan Rapid Transport System to Minimize Sidetrack Construction", Journal of the Korean Society for Railway, Vol.16, No.5, pp. 402-409, 2013. crossref(new window)

2.
J. T. Kim, M. S. Kim, K. J. Ko and D. G. Jang, "A Study of the Standardization of the Maximum Acceleration for the High Performance Train", 2014 Spring Conference Proceeding of the Korean Society for Railway, Jeju, pp. 674-679, 2014.

3.
H. J. Park, Y. O. Cho, M. R. Kim, J. B. Wang and S. K. Lee, "A Fundamental Study on the Electro-magnetic Analysis of the Traction Motors for EMU", KRRI Final Report Sponsored by KORAIL, 1998.

4.
Y. Matsumoto, S. Ozaki and A. Kawamura, "A Novel Parallel-Connected Multiple Induction Motors Vector Control Method for the Rolling Stock Traction System", Industry Applications Society, Vol. 121, No. 7, pp. 747-755, 2001.

5.
S. S. Lim, J. C. Kim, Y. H. Park and J. S. Han, "A Study on wheel Diameter Difference Management of the High Speed Train", 2012 Autumn Conference Proceeding of the Korean Society for Railway, Gyeongju, pp. 1896-1901, 2012.

6.
Y. S. Byun and Y. C. Kim, "Modeling for Traction System of the Vehicle Including Running Characteristics", Trans. KIEE, Vol. 56, No. 11, pp. 1955-1961, 2007.

7.
J. A. Lee, E. C. Kim and D. H. Kim, "Study of running resistance for ITX train", 2012 Autumn Conference Proceeding of the Korean Society for Railway, Gyeongju, pp. 1188-1192, 2012.

8.
Y. Matsumoto, N. Eguchi and A. Kawamura, "Novel re-adhesion control of single-inverter multiple-induction-motors drives for the rolling stock traction system", IEEJ Trans. IA, Vol. 123, No. 5, pp. 591-599, 2003. crossref(new window)