Effects of Wheel Wear and Diameter Difference on Dynamics of High-speed Trains

2014 ◽  
Author(s):  
P. Han ◽  
W.H. Zhang ◽  
Y. Li
Keyword(s):  
High Speed ◽  
Wheel Wear ◽  
High Speed Trains

Influence of motor harmonic torque on wheel wear in high-speed trains

2019 ◽  
Vol 234 (1) ◽  
pp. 32-42
Author(s):  
Yayun Qi ◽  
Huanyun Dai
Keyword(s):  
High Speed ◽  
Dynamic Performance ◽  
Harmonic Component ◽  
Wear Depth ◽  
Vertical Force ◽  
Wheel Wear ◽  
High Speed Trains ◽  
Train Speed ◽  
Lateral Creep ◽  
Creep Force

With the increase of train speed, the harmonic torque of the traction motor of a high-speed train is not a negligible source of excitation. In order to explore the influence of the harmonic torque of the motor on wheel wear, a high-speed EMU vehicle model was established based on the multibody dynamics theory. FASTSIM was used to calculate the wear parameters, and the Zobory wear model was used to calculate the depth of the wheel wear. The influence of the harmonic torque of the motor on the wear parameters and wear depth of high-speed trains under straight and curve conditions is calculated, respectively. The simulation results show that the harmonic torque has a large influence on the wheel rail vertical force and the longitudinal creep force and has little influence on the lateral creep force. With the 30% harmonic torque, the wheel rail vertical force increases by 7.6%, the longitudinal creep force increases by 15%, and the lateral creep force increases by 4%. The amplitude of the longitudinal creepage increases by 14.2% when the harmonic torque is 10%, and increases by 34.4% when the harmonic torque is 30%. When the harmonic torque increases, the wheel wear depth increases, the 10% harmonic torque increases by 3% and the 30% harmonic torque increases by 8%, and the increase of the motor harmonic component accelerates the wheel wear. At the same time, small longitudinal positioning stiffness can help to reduce the influence of the harmonic torque, and the selection of the longitudinal positioning stiffness needs to consider the dynamic performance of the vehicle.

scholarly journals Independently Rotating Wheels with Induction Motors for High-Speed Trains

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
B. Liang ◽  
S. D. Iwnicki
Keyword(s):  
Induction Motor ◽  
High Speed ◽  
Dynamic Control ◽  
Feedback Mechanism ◽  
Wheel Wear ◽  
Field Orientation ◽  
Railway Vehicles ◽  
Stability Performance ◽  
Field Orientation Control ◽  
High Speed Trains

Railway vehicles with conventional wheelsets often experience problems of lateral instabilities or severe wear when running at high speed. The use of an independently rotating wheelset (IRW) can potentially eliminate the cause of wheelset hunting and reduce wheel wear as the mechanical feedback mechanism causing the problem is decoupled. This paper presents an investigation into the design of a novel induction motor configuration and controller for IRW in order to provide the stability required to satisfy the performance requirements for railway vehicles. A computer model of the mechanical and electrical parts of the system was developed. Simulation and experiments of the wheelsets with active driving motor control have demonstrated that a wheelset with independently driven wheels has a good stability performance over a traditional wheelset. Controllers with indirect field orientation control for dynamic control of an induction motor have shown to be suitable for this application in both its response and its controllability.

Field measurements of the evolution of wheel wear and vehicle dynamics for high-speed trains

2017 ◽  
Vol 56 (8) ◽  
pp. 1187-1206 ◽  
Author(s):  
Huailong Shi ◽  
Jianbin Wang ◽  
Pingbo Wu ◽  
Chunyuan Song ◽  
Wanxiu Teng
Keyword(s):  
Vehicle Dynamics ◽  
High Speed ◽  
Field Measurements ◽  
Wheel Wear ◽  
High Speed Trains

Development and validation of a model for predicting wheel wear in high-speed trains

2017 ◽  
Vol 18 (8) ◽  
pp. 603-616 ◽  
Author(s):  
Gong-quan Tao ◽  
Xing Du ◽  
He-ji Zhang ◽  
Ze-feng Wen ◽  
Xue-song Jin ◽  
...  
Keyword(s):  
High Speed ◽  
Wheel Wear ◽  
High Speed Trains ◽  
Development And Validation
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