采用恒功率控制策略的增程式汽车动力系统匹配

Parameters Matching of Powertrain System of the Extended-Range Vehicle based on Constant Power Control

以增程式电动车整车参数基本要求、动力性指标作为约束条件以及节能减排为最终目的开展研究。针对增程式电动汽车动力系统参数匹配问题,通过相应的理论计算对驱动电机、蓄电池、发动机、发电机等动力总成核心部件进行了性能匹配设计,采用恒功率控制策略,运用AVL Cruise为仿真平台构建整车模型,计算了所设计的增程式电动车动力性能及经济性。研究结果表明:最大爬坡度、加速时间、最高车速满足车辆动力性要求,并能实现增程器高效工作。证明了増程式电动汽车既实现了节能减排,又克服了纯电动汽车续驶里程短的缺陷。

Based on the basic requirements of vehicle parameters and dynamic indexes of ExtendedRange Electric Vehicle as constraints,the performance matching design of driving motor,engine,generator and other power assembly core components was carried out by corresponding theoretical calculation for the power system parameter matching problem of Extended-Range Electric Vehicle.AVL Cruise was used as the simulation platform. The whole vehicle model was constructed by the incremental constant power control strategy,and the economic performance and power performance of the designed were calculated. The results show that the maximum gradient,acceleration time and the maximum speed met the vehicle dynamic requirements,and can achieve efficient operation of the range enhancer. It is proved that the EREV not only realizes energy saving and emission reduction,but also overcomes the shortcoming of short driving distance of pure electric vehicle.