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Increasing realism in modelling energy losses in railway vehicles and their impact to energy-efficient train control

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Railway Engineering Science 2024年第3期32卷 257-285页

作者： Michael Nold francesco corman Institute for Transport Planning and Systems ETH ZürichZürichSwitzerland

The reduction of energy consumption is an increasingly important topic of the railway ***-efficient train control(EETC)is one solution,which refers to mathematically computing when to accelerate,which cruising speed to hold,how long one should coast over a suitable space,and when to *** approaches in literature and industry greatly simplify a lot of nonlinear effects,such that they ignore mostly the losses due to energy conversion in traction components and *** fill this research gap,a series of increasingly detailed nonlinear losses is described and *** categorize an increasing detail in this representation as four *** study the impact of those levels of detail on the energy optimal speed *** do this,a standard approach based on dynamic programming is used,given constraints on total travel *** evaluation of multiple test cases highlights the influence of the dynamic losses and the power consumption of auxiliary components on railway trajectories,also compared to multiple *** results show how the losses can make up 50%of the total energy consumption for an exemplary *** them would though result in consistent but limited errors in the optimal ***,more complex trajectories can result in less energy consumption when including the complexity of nonlinear losses than when a simpler model is *** effects are stronger when the trajectory includes many acceleration and braking phases.

关键词： Train trajectory optimization Energy-efficient train control(EETC) Dynamic efficiency Power losses in railway vehicles

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