Abstract
This paper deals with a study on the dynamic behavior of 600 km/h wheel-type train propelled by superconducting linear synchronous motor (LSM). This train is of a traditional wheel-on-rail type with traction motors on wheel-bogies. However, for the 600 km/h speed, on the both sides of each vehicle, superconducting LSMs are attached and the ground coils are installed on the guideway. In this case, the guideway irregularities act as disturbance to the vehicle causing deterioration of ride comfort. And besides thrust force, the normal force could be created in superconducting LSM control, which influences vehicle dynamics during running. In this study, to examine the effect of guideway irregularity and normal force on dynamic behavior of proposed train, the vehicle dynamic model is driven and frequency analysis is performed through simulation. The simulation results show that the lateral directional acceleration is mainly influential to ride comfort; however this could be reduced effectively by electromagnetic damping force from linear generator. It is also shown that the normal force effect from superconducting LSM control is limited even though the attractive normal force acts favorably to ride comfort.
Highlights
Technology competitions for increasing the speed of rail transportation constantly become fierce around the world
To resolve this problem while aiming at the high speed, compared with the 300 km/h level wheel type railway and 400 km/h level maglev, the new concept of high speed railway aiming at 600 km/h level is recently introduced by C
In [5], author proposed the dual-mode propulsion system propelled by traction motors in low speed and superconducting linear synchronous motor (LSM) in high speed
Summary
Technology competitions for increasing the speed of rail transportation constantly become fierce around the world. (2014) A Study on the Dynamic Behavior of Wheel-Type Train Propelled by Superconducting Linear Synchronous Motor. Despite the superiority in high speed, the drawback such as interoperability problem that maglev could not interoperated with the existing wheel-on-rail track is the main obstacle for maglev commercialization [4]. By adopting the traditional wheel type rail, the interoperability problem with existing railroad could be resolved and by installing superconducting electromagnets on vehicle sides and ground LSM coils on the exclusive high speed line, the powerful thrust force could be achieved. As a model for dynamic analysis, the Korea high speed wheel type train (KTX) attaching superconducting electromagnets on vehicle sides is assumed. Through the simulations, system dynamic behavior according to the guideway irregularities and normal forces is analyzed and the ride comfort improvement method is suggested
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