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单轴并联式混合动力城市客车再生制动挡位决策

Keywords: 再生制动,混合动力公交客车,挡位决策,序列二次规划

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Abstract:

设计一种串并混联式复合制动踏板方案,并针对该方案制订再生制动阶跃式制动力分配曲线.分析了影响再生制动效率的多种因素,提出运用序列二次规划(SQP)算法优化挡位决策和电机输出扭矩以解决再生制动中回收效率与制动力分配曲线和电机转速的矛盾.在Cruise和Matlab/Simulink联合仿真平台下,建立了单轴并联式混合动力传动系统整车模型,基于欧洲公交客车循环工况(UDC)进行了仿真研究.结果表明,电池荷电状态(SOC)比采用传统双参数换挡规律提高了近1.5%.进行了三种典型制动工况下实车试验,取得了与仿真结果相吻合的试验结果,其中正常制动工况下的能量回收率比传统双参数换挡策略提高了近11.00%.

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