Energy-efficient train control incorporating inherent reduced-power and hybrid braking characteristics of railway vehicles

Authors

Yang Peng
Shaofeng Lu
Feng Chen
Xiao Liu
Zhongbei Tian

Document Type

Journal Article

Publication Date

2024

Subject Area

mode - rail, place - urban, infrastructure - vehicle, planning - methods

Keywords

energy-efficient train control (EETC)

Abstract

With the increasing awareness of carbon neutrality, the application of energy-efficient train control (EETC) to rail transportation systems continues to attract attention from industry and academia. In many classic EETC studies, train models are commonly simplified with pure regenerative braking and constant power characteristics during high speeds, to simplify the complexity of the model. In this paper, a realistic model incorporating hybrid braking characteristics combining regenerative and mechanical braking, and reduced-power characteristics at high speeds into the EETC problem is proposed to improve control precision of the train and the modeling precision of the energy consumption and time. This study addresses the minimum-time train control (MTTC) problem and EETC problem considering nonlinear traction characteristics based on the mixed-integer linear programming (MILP) method, and nonlinear traction and braking characteristics are approximated via a piecewise linear (PWL) modeling technique. Results indicate that the proposed alternative models achieves some deviations from the realistic model in terms of time, energy consumption, and control strategies. The deviations between models in energy consumption and time accumulate as the number of operating stations increases. Therefore, the choice of an appropriate model depends on the precision requirements of various scenarios. In scenarios demanding higher precision, selecting the proposed realistic model is crucial for more accurate computation of energy consumption and time and for obtaining more precise control strategies.

Rights

Permission to publish the abstract has been given by Elsevier, copyright remains with them.

Comments

Transportation Research Part C Home Page:

http://www.sciencedirect.com/science/journal/0968090X

Recommended Citation

Peng, Y., Lu, S., Chen, F., Liu, X., & Tian, Z. (2024). Energy-efficient train control incorporating inherent reduced-power and hybrid braking characteristics of railway vehicles. Transportation Research Part C: Emerging Technologies, 163, 104626.