增程式电动公交车动力系统仿真分析

Simulation Analysis of the Power System of the Extended Range Electric Bus

本文以某款增程式电动公交车为原型,以功率跟随控制策略和恒功率控制策略对整车能量进行管理,并在Matlab/simulink仿真软件中建立了整车仿真模型,对两种控制策略的仿真结果进行了分析比较,结果表明在功率跟随控制策略下,增程式电动公交车的油耗略高于恒功率控制策略,但其动力性较好,爬坡性能和加速性能均优于恒功率控制策略。对于恒功率控制策略发动机运行在最高效率点,所以其经济性要优于功率跟随控制策略,但其充放电循环频率高于功率跟随控制策略。

In this paper, taking a certain increased program electric bus as the prototype, the power follow control strategy and constant power control strategy are used to analyze the energy management of the whole vehicle, and the vehicle simulation model is established in Matlab/simulink simulation software. The simulation results of the two control strategies are analyzed and compared. The results show that under the power follow control strategy, the fuel consumption of the increased program electric bus is slightly higher than that of the constant power control strategy, but its power performance is good, The climbing performance and acceleration performance are better than the constant power control strategy. The constant power control strategy engine running at the highest efficiency point, its economy is better than the power follow control strategy, but its charge and discharge cycle frequency is higher than the power follow control strategy.