Dynamics Simulation Analysis of High-speed Train Vehicle-track Coupling System Based on UM

Cao, Xingxiao; Wang, Xiangping; Wang, Hongbing

doi:10.1109/icaica50127.2020.9182609

Cited by 2 publications

(1 citation statement)

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“…Due to the complex composition and dynamics of the traction drive system, the high‐order mechanical structure model is not conducive to a clear and intuitive analysis of the performance of the system. A concentrated mass model is established on Simpack with the mechanical parts simplified to double inertia models consisting of driving and driven devices, and the elastic parts equated to a shaft with certain stiffness and damping, as shown in Figure 18 [25].…”

Section: Offline Simulation and Analysismentioning

confidence: 99%

An improved passivity‐based control for suppressing the traction motor torque ripples due to traction network voltage fluctuation in high‐speed railways

Zhao

Liu

et al. 2023

IET Power Electronics

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When the voltage fluctuation of the traction network occurs in high‐speed railways, the interharmonics in the grid‐side voltage will propagate to the traction motor, which results in the motor torque ripple of running trains. The ripple can cause abnormal vibrations of key train components and even influence train operation safety. However, the traditional proportional‐integral controller used in the inverter‐motor system has a weak anti‐interference capability when facing nonlinear disturbances. This paper proposes an improved passivity‐based control (IPBC) to suppress the impact of interharmonics on trains. First, the Euler‐Lagrange mathematical model of the traction inverter‐motor system is established. Then, the PBC for this system is designed by damping injection, ensuring the asymptotic stability of the system. Furthermore, to purposely suppress the impact of the periodic disturbance on the system, a repetitive controller is designed in parallel with the PBC to control the inverter‐motor system. Finally, through the offline simulation and HIL simulation, it has been verified that the proposed IPBC can effectively suppress the motor torque ripple and the vibrations of key train components. The control strategy proposed in this paper has a reference significance for improving the operational stability of high‐speed trains.

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Section: Offline Simulation and Analysismentioning

confidence: 99%