基于瞬时优化的纯电动商用车能量管理策略

Energy Management Strategy of Pure Electric Commercial Vehicle Based on Instantaneous Optimization

随着人们对环保和排放的要求逐渐提高,动力电池逐渐取代内燃机成为越来越多的商用车的动力来源。为了进一步提高纯电动商用车的经济性能,需要制定其能量管理策略。提出了一种基于瞬时优化的纯电动商用车能量管理策略。瞬时优化能量管理策略常用于混合动力汽车,但对于具有双电机的纯电动商用车,瞬时优化方法同样可以用于确定其能量管理策略。本文提出的能量管理策略通过对比不同的电机分配方案之间能量损失,确定了瞬时最优的功率分配方案,从而提高了车辆的经济性能。仿真实验证明,采用提出的能量管理策略,纯电动商用车的经济性能可以提高6.1%。

With the increasing requirements of environmental protection,the power battery has gradually replaced the internal combustion engine as the power source of more and more commercial vehicles.To further improve the economic performance of pure electric commercial vehicle,it is necessary to formulate its energy management strategy.This paper proposes an energy management strategy for pure electric commercial vehicle based on instantaneous optimization.Instantaneous optimization energy management strategy is commonly used in hybrid electric vehicles,but for pure electric commercial vehicles with dual motors,instantaneous optimization method can also be used to determine the energy management strategy.The energy management strategy proposed in this paper determines the instantaneous optimal power distribution scheme by comparing the energy loss between different motor distribution schemes,so as to improve the economic performance of the vehicle.Simulation results show that the economic performance of pure electric commercial vehicle can be improved by 6.1%.