ISG混合动力电动汽车控制策略仿真研究

Modeling and Simulation of Control Strategy of ISG Hybrid System

控制策略是混合动力汽车的关键技术,直接影响混合动力汽车整车性能。ISG混合动力汽车中发动机和电机输出转矩在同轴上耦合,工作要求具有独特性。通过对驱动结构和工作要求分析,以优化整车动力性和燃油经济性为目标,提出了针对ISG混合动力系统的电辅助控制策略,制定了各行驶工况下的控制逻辑。建立了相关控制模型,在Advisor软件平台上对控制策略进行了仿真。仿真结果表明,提出的电辅助控制策略完全适用于ISG混合动力汽车,与传统汽车相比,整车动力性和燃油经济性均得到进一步提高。

The control strategy is one of the key technologies for hybrid electric vehicle,for it affects the performance of the whole vehicle, In ISG hybrid system, the torque from engine and motor is coupled at one shaft. The basic requirement of ISG hybrid is characteristic. The configuration and basic requirements of ISG hybrid system are analyzed in detail in this paper. An Electric Assist Control Strategy based on the ISG HEV is proposed and the corresponding control logic is made. Based on the software Advisor, the subsystem models of control strategy are established, and the performance of the ISG hybrid system is simulated. It concludes that the control strategy is reasonable, and the performance and fuel economy are bettered comparing with the conventional vehicle.