并联混合动力汽车能量管理与转矩协调控制策略

研究并联混合动力汽车的控制策略。基于发动机输出转矩最优的能量管理策略,对并联混合动力汽车在工作模式切换中的相互配合问题,提出发动机动态转矩控制+动力电池荷电状态(state of charge,SOC)干预+电机转矩补偿控制的转矩协调控制方法;在Matlab/Simulink/Stateflow平台搭建整车能量管理控制策略模型,控制发动机工作在高效率区,保证发动机输出最优转矩;根据电池的SOC干预电机的运行状态,协同发动机提供整车需求转矩。在Cruise平台下建立整车模型,以新欧洲驾驶周期作为循环工况进行离线仿真。结果表明,能量管理与转矩协调控制策略能够有效分配电机和发动机的转矩输出,满足混合动力汽车多模式切换的要求。

Energy management and torque collaborative control strategy for parallel hybrid electric vehicle

Aiming at the control strategy research of parallel hybrid electric vehicle,the energy management control strategy based on engine optimal torque is adopted to improve fuel economy.In order to cope with the integrating problem of parallel hybrid electric vehicles in mode switching,a torque collaborative control strategy based on“engine dynamic torque control+battery SOC intervention+motor compensation control”is proposed and modeled on Matlab/Simulink/Stateflow platform.The motor is controlled according to the SOC and cooperated with engine to provide vehicle demand torque.A complete vehicle model is also established using Cruise platform for offline simulation with NEDC condition.The results show that the developed torque distribution strategy can effectively coordinate the torque distribution between engine and motor,and meet the multi-mode switching of hybrid vehicles.