混合动力汽车电机最优工作曲线确定与应用

Motor Optimal Operation Line's Establishment and Application of HEV

在并联混合动力汽车最优工作曲线控制策略的研究中,都是以发动机为主控对象,令其工作在最优曲线上以提高整车的燃油经济性,但电机在工作中的效率并不一定是最佳的。以混合动力汽车另一个动力提供源——电机为主控对象,通过找寻电机最佳效率工作曲线,制定相应的电机最优工作曲线控制策略。与逻辑门限值控制策略的仿真进行对比,结果表明电机最优工作曲线控制策略可以使整车百公里燃油消耗量降低9.5%,电机平均工作效率提高23%。

In the research of optimal operation line control strategy of parallel hybrid electric vehicle （PHEV）, engine is often considered as the primary object. It can improve vehicle＇s fuel economy with engine working on optimal operation line, but motor＇s operation efficiency is not always the best. Motor, as another power source of HEV, was the primary obiect. The motor optimal efficiency line was designed, and the corresponding control strategy was established subsequently. Contrasted with the simulation results of the logic threshold value control strategy, motor optimal operation line control strategy could decrease vehicle＇s fuel economy by 9.5 %, and could increase motor＇s operation efficiency by 23 %