A Rule-based Energy-saving Driving Strategy for Battery Electric Bus at Signalized Intersections
To reduce the high energy consumption of battery electric buses(EBs)when crossing the signalized intersections,this paper proposes a rule-based two-stage driving strategy,which accounts for reasonable strategy scenarios and different acceleration and deceleration variation concave-convex without sacrificing passenger comfort and passing time.In the first stage,four driving strategies are proposed for EB crossing the intersections,including constant speed strategy,acceleration strategy,deceleration strategy,and brake stopping strategy.This process considers vehicle operating status and the signal phase and timing(SPaT)information of the intersection obtained via vehicle-to-infrastructure(V2I)technology.In the second stage,the energy consumption estimation model based on the XGBoost algorithm and the curve model based on the acceleration and deceleration characteristic parameters are used to optimize the speed profile of the constant speed process,acceleration process,and deceleration process in the selected driving strategy.The effectiveness of the four driving strategies was analyzed by the VISSIM simulation.The results show that the proposed strategy can effectively reduce energy consumption by 29.8%～34.2%in four driving scenarios.Further analysis revealed that the optimal speed profile has concave-convex properties both above and below the economic speed,therefore the concave-convex laws of the most energy-saving speed profiles with different speed adjustment ranges are summarized through comparative experiments,which can Provide easier-to-operate driving guidance for energy-saving driving of EBs.
urban trafficenergy-saving strategyspeed profile optimizationbattery electric bussignalized intersectiondriving scenario division
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