Sage Journals: Discover world-class research

Abstract

There are two major obstacles that prevent a conventional train from achieving high speed: the limitation of wheel–rail adhesion and the increase of instability in the wheel–rail running dynamics. To overcome these problems, a new hybrid train model is introduced in this study. This train utilizes a superconducting linear synchronous motor (SC-LSM), instead of a traction motor, for propulsion; therefore, this train does not have the limitation of adhesion between the wheel and the rail. Using an SC-LSM also improves the stability of the train during high-speed operations. The magnetic stiffness between the train and the guideway is additionally generated by using the SC-LSM, which is favorable for the running stability at a high speed. This study focuses on the magnetic stiffness and its effect on the running stability in the proposed hybrid train model. First, the magnetic stiffness in the SC-LSM is investigated both theoretically and experimentally. Then, a train dynamic model including the magnetic stiffness is developed and the effect of magnetic stiffness on the running stability is analyzed through various simulations.

Keywords

High-speed train running stability magnetic stiffness superconducting linear synchronous motor dynamic analysis

Get full access to this article

View all access options for this article.

References

Brown G and Adonis A. High-speed rail. Crown, London: Department for Transport, 2010, pp.24–41.

Givoni

. Development and impact of the modern high-speed train: A review. Transp Rev 2006; 26: 593–611.

Knothe

Böhm

. History of stability of railway and road vehicles. J Veh Syst Dyn 1999; 31: 283–323.

True

. On the theory of nonlinear dynamics and its applications in vehicle system dynamics. J Veh Syst Dyn 1999; 31: 393–421.

Schupp

. Bifurcation analysis of railway vehicles. Multibody Syst Dyn 2006; 15: 25–50.

Lee

et al.

Conceptual design of superconducting linear synchronous motor for 600 km/h wheel-type railway. IEEE Trans Appl Supercond 2014; 24: 1–4.

Gieras

Piech

. Linear synchronous motors-transportation and automation systems, New York, NY: CRC Press, 2000, pp. 103–107.

Park

Kim

Lee

. Design of a small-scaled superconducting lsm for the very high speed railway vehicle. Trans Korean Inst Electr Engrs 2014; 63: 1602–1607.

Yen

Zheng

et al.

Normal force analysis on a high temperature superconducting linear synchronous motor. IEEE Trans Appl Supercond 2012; 22. 5200304–5200304.

10.

Zboinski

Dusza

. Self-exciting vibrations and HOPF’s bifurcation in non-linear stability analysis of rail vehicles in a curved track. Eur J Mech A/Solids 2010; 29: 190–203.

11.

Zeng

. Stability analysis of high speed railway vehicles. JSME Int J Ser C 2004; 47: 464–470.

12.

True

Asmund

. The dynamics of railway freight wagon wheelset with dry friction damping. J Veh Syst Dyn 2002; 38: 149–163.

13.

Molatefi

Hecht

Kadlvar

. Effect of suspension system in the lateral stability of railway freight trucks. Proc IMechE, Part F: J Rail and Rapid Transit 2007; 221: 399–407.

14.

Dumitriu

. Influence of the longitudinal and lateral suspension damping on the vibration behaviour in the railway vehicles. Arch Mech Eng 2015; 62: 115–140.

15.

Yoshino

Hosoya

Yoshino

et al.

Theoretical and experimental analyses on stabilization of hunting motion by utilizing the traction motor as a passive gyroscopic damper. Proc IMechE, Part F: J Rail and Rapid Transit 2015; 229: 395–401.

16.

Baldovin

. The influence of the damping coefficients to the hunting motion stability of the bogies. Romanian J Acoust Vib 2012; 9: 33–38.

17.

Watanabe

Yoshioka

Suzuki

et al.

A study of vibration control systems for superconducting maglev vehicles (vibration control of lateral and rolling motion). J Syst Des Dyn 2007; 1: 593–604.

18.

Hoshino

Suzuki

Watanabe

. Reduction of vibration in maglev vehicles using active primary and secondary suspension control. Quart Rep RTRI 2008; 49: 113–118.

19.

Lee

et al.

Dynamic analysis of wheel-rail high speed train propelled by superconducting linear synchronous motor. J Korea Acad-Ind Coop Soc 2016; 17: 119–125.

20.

Iwnicki

. Handbook of railway vehicle dynamics, Boca Raton, FL: CRC Press, 2006.

21.

Dukkipati

. Dynamics of railway vehicle systems, London: Academic Press, 1984, pp. 103–134.

22.

Park

Koh

Kim

. Parametric study of lateral stability for a railway vehicle. J Mech Sci Technol 2011; 25: 1657–1666.

Analysis of the influence of magnetic stiffness on running stability in a high-speed train propelled by a superconducting linear synchronous motor

Abstract

Keywords

Get full access to this article

References