Catenary-free operated electric trains, as one of the recent technologies in railway transportation, has opened a new field of research: speed profile optimization and energy optimal operation of catenary-free operated electric trains. A well-formulated solution for this problem should consider the characteristics of the energy storage device using validated models and methods. This paper discusses the consideration of the lithium-ion battery behavior in the problem of speed profile optimization of catenary-free operated electric trains. We combine the single mass point train model with an electrical battery model and apply a dynamic programming approach to minimize the charge taken from the battery during the catenary-free operation. The models and the method are validated and evaluated against experimental data gathered from the test runs of an actual battery-driven train tested in Essex, UK. The results show a significant potential in energy saving. Moreover, we show that the optimum speed profiles generated using our approach consume less charge from the battery compared to the previous approaches.

中文翻译：

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带有锂离子电池的无链电动火车的速度曲线优化

作为铁路运输中的最新技术之一，无链操作的电动火车开辟了一个新的研究领域：无链操作的电动火车的速度曲线优化和能量优化操作。针对此问题的结构合理的解决方案应使用经过验证的模型和方法来考虑储能设备的特性。本文讨论了在无链运行的电动火车的速度曲线优化问题中对锂离子电池行为的考虑。我们将单质点列车模型与电池模型相结合，并采用动态编程方法来最大程度地减少无链运行期间从电池中获取的电荷。根据从在英国埃塞克斯市测试的实际电池驱动火车的测试运行收集的实验数据对模型和方法进行了验证和评估。结果表明在节能方面有巨大潜力。此外，我们证明，与以前的方法相比，使用我们的方法生成的最佳速度曲线消耗的电池电量更少。