关键词: 车辆工程, 纯电动公交, 公交调度, 电池核电状态, 充电策略, 动态规划

Abstract: An algorithm to optimize the fleet size of pure electric buses for single route and single charging station was proposed in consideration of charging range, charging rate, battery’s state of charge and dispatch strategy etc. The algorithm utilized a global optimization method to reduce the required number of electric buses and minimize the difference among bus departure frequency. A case study for Dongguan Songshan Lake bus line was presented to test the algorithm, and the bus schedule, charging rate, the influnce of bus power consumption, on running numbers of buses were analyzed. The proposed algorithm was compared with conventional buses dispatch algorithm. It is found that the proposed algorithm can effectively reduce the required number of buses and keep the balance of bus’ utilization rate, so that the cost of fleet operation can be optimized.

Key words: vehicle engineering, pure electric bus, bus dispatch, state of charge, charging strategy, dynamic programming