Abstract: Dynamic programming is often used to find the global optimal solution for known operating conditions, but this method requires a large amount of calculation and takes a long time to solve. In this paper, in order to solve this problem, the generator set and battery pack model are appropriately simplified, and the battery pack state of charge is state variables, the output power of the battery pack is used as the control variable, and the Pontryagin minimum principle is used to solve the energy management problem of hybrid electric vehicles, and the global optimal solution is obtained. Compared with dynamic programming, the time performance of this method is raised dramatically.

Key words: PHEV, PMP, Energy management strategy

摘要： 动态规划常用于求取已知工况的全局最优解,但该方法计算量大,求解时间长,为了解决这个问题,文章将发电机组和电池组模型适当化简,以电池组荷电状态为状态变量,以电池组输出功率为控制变量,采用庞特里亚金极小值原理来求解混合动力汽车的能量管理问题,得出全局最优解,和动态规划相比,该方法的时间性能大幅度提升。

关键词: 插电式混合动力汽车, 庞特里亚金极小值原理, 能量管理策略