摘要
以一款ISG并联混合动力客车为对象,对比现存的两种系统效率最优控制算法,并提出一种改进控制算法。应用这3种算法确定行车充电模式切换规则和转矩分配规则,并进行对比仿真和硬件在环试验验证。结果显示,所提出的系统效率最优行车充电控制规则进一步提高了整车经济性;该规则在发动机低效工况行车充电,以相对高效的方式适度发电,既避免了大量能量的二次转化,又通过电机驱动替代发动机低效工作而实现节油。采用该控制规则时车辆的能量经济性比采用其他两种控制规则时分别提升了13%和20%,在验证了控制规则合理性的同时为系统效率最优控制算法的研究和应用提供了参考。
With a parallel ISG hybrid electric bus as object, two existing optimal control algorithms for sys- tem efficiency are compared, and a revised algorithm is proposed. Based on these three algorithms the corresponding driving charging mode switching rules and torque distribution rules are determined respectively with comparative sim- ulation and hardware-in-the-loop verification test conducted. The results indicate that the proposed driving charging control rule for optimal system efficiency further enhances vehicle energy economy. With the rule, when engine works in low-efficiency condition, driving charging performs with reasonable electricity generation in a relatively high efficient way. As a result, the secondary conversion of a large amount of energy is avoided, while the energy saving is achieved through replacing the low-efficient work of engine by motor drive. The energy economy of vehicle with the proposed control rule is 13% and 20% higher than that with two other control rules, verifying the rationality of the proposed control rule and providing references for the research and application of optimal control algorithm for system efficiency.
出处
《汽车工程》
EI
CSCD
北大核心
2015年第7期835-841,847,共8页
Automotive Engineering
基金
国家863计划项目(2011AA11A210)资助
关键词
混合动力客车
等效燃油消耗率
系统效率
控制规则
转矩分配
hybrid electric bus
equivalent specific fuel consumption
system efficiency
control rules
torque distribution
