Research on multi-acceleration curve optimization for electric vehicle

As the great differences of the electric energy consumption are generated when electric vehicle (EV) accelerates in different ways, this research studies on the difference of energy consumption per distance when accelerating in a multi-acceleration way and single-acceleration way, on the basis of the theory research, an EV is taken as the research object and the energy consumption per kilometre is used as the objective function, an optimization design method for the EV acceleration way is presented. The optimization method is used to optimize the acceleration curve of the NEDC drive cycle and the optimum acceleration curve is obtained. In order to verify the energy saving effect of the optimum acceleration curve, the EV test of optimum curve is conducted. The experiment results show that compared with the NEDC curve, the energy consumption per kilometre of the No.1-5 optimum curve is reduced by 14.6%, 13.5%, 6.2%, 6.7% and 1.9% respectively. (paper)