汽车工程

汽车工程 ›› 2018, Vol. 40 ›› Issue (7): 749-.doi: 10.19562/j.chinasae.qcgc.2018.07.001

• •    下一篇

双电机一体化纯电动客车动力分配策略优化

解少博，刘通，李会灵，魏朗   

  • 出版日期:2018-07-25 发布日期:2018-07-25

Optimization on Power Distribution Strategy for a Dualmotor Integrated Battery Electric Bus

Xie Shaobo, Liu Tong, Li Huiling & Wei Lang   

  • Online:2018-07-25 Published:2018-07-25

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摘要： 本文中以整车能耗最小化为目标为一款双电机一体化纯电动汽车进行动力模式的优化。分别应用基于优化方法的动力分配策略（包括动态规划策略和瞬时能耗最小策略）和基于规则的动力分配策略（双电机等转矩分配策略和主辅电机转矩分配策略）共4种策略进行中国典型城市公交工况仿真。结果表明：针对双电机一体化纯电动汽车，基于动态规划的全局能耗优化策略退化为瞬时能耗最小策略，即瞬时优化应作为一体化双电机纯电机汽车动力模式分配的最佳方法；基于动态规划/瞬时能耗最小策略的百公里电耗分别比等转矩分配和主辅分配策略少507和229kW·h。

关键词: 双电机一体化系统, 动力分配, 动态规划, 瞬时优化, 等转矩分配, 主辅转矩分配

Abstract: The operation mode of a dualmotor integrated battery electric vehicle is optimized with minimizing its energy consumption as objective. A simulation using China city bus cycle is conducted with four power distribution strategies, i.e. optimizationbased dynamic programming (DP) strategy and instantaneous consumption minimization strategy (ICMS), and rulebased symmetric torque (ST) distribution strategy and mainauxiliary (MA) motor torque distribution strategy respectively. The results of simulation indicate that for dualmotor integrated battery electric vehicle, DP, as a global optimization strategy, tends to be degenerated into ICMS, meaning that ICMS should be the best scheme of operation mode distribution for dualmotor integrated battery electric vehicle, and the electricity consumption per 100km with DP/ICMS strategy is 507 and 229kW·h less than that with ST and MA strategy respectively.

Key words: dual motor integrated system, power distribution, dynamic programming, instantaneous optimization, symmetric torque distribution, mainauxiliary torque distribution