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Plug-in并联式单电机混合动力汽车能量管理优化控制策略

, PP. 170-176

Keywords: 汽车工程,插电式混合动力汽车,优化控制,能耗经济性,门限值,瞬时优化

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Abstract:

?为了改善并联式单电机插电式混合动力汽车的能耗经济性,提出门限值与瞬时优化方法相结合的控制策略。建立能耗经济性的目标函数,采用遗传算法优化出电量消耗(CD)模式与电量维持(CS)模式切换的电池荷电状态(SOC)目标值、CS模式下电池SOC的上限值和下限值3个关键门限值参数;采用瞬时优化算法计算出机械无级变速器的最优速比及动态转矩分配值并在MATLAB/Simulink仿真平台下建立模型进行仿真。研究结果表明:在新欧洲行驶循环、城市测功器驾驶进程和高速路燃油经济测试循环工况下,采用控制策略的能耗经济性与采用门限值控制策略得到的结果相比有较大的提高。

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