针对并联式混合动力车动力系统中发动机和电驱动系统之间存在的能量分配和转矩协调问题,以发动机高效率工作为目的,建立了混合动力车前向式动力系统模型,以发动机稳态特性图和超级电容的SOC值为主要依据,设计了发动机和电动机间的转矩分配控制策略,仿真结果表明所建立的系统模型和协调转矩控制策略能够实时动态的控制发动机和电机的转矩分配,可有效的控制混合动力系统在高效区工作,既满足了系统对动力性的需求,又优化提高燃油经济性。
Aiming at the problem of energy distribution and torque coordination existed in the PHEV dynamical system between engine and electrically driven system,the forward simulation model of the PHEV dynamic system was established for the purpose of keeping the engine operating in high efficiency.Basing on the engine efficiency and ultra capacitor SOC value ,torque distribution control strategy between the engine and the electric motor was designed,and by analyzing the simulation result,it is shown that torque distribution can be controlled effectively and dynamically on the high-efficiency area, which not only meets the requirements of power performance, but also improves the oil efficiency.