Abstract: For a series plug-in hybrid electric bus, this paper establishes the corresponding numerical model of the power components of vehicle based on MATLAB. Under the Chinese typical city bus driving cycle, the DP strategy based on global optimization was established, and the energy consumption cost was compared with that of the CD-CS strategy and PMP strategy. The results show that: (1) The SOC fluctuates within a certain range based on CD-CS strategy, and the SOC trajectories of the DP strategy and the PMP strategy change approximately linearly. (2) The energy consumption cost of CD-CS strategy is 22.68% higher than that of DP strategy, and the energy consumption cost of PMP strategy is 0.30% higher than that of DP strategy. The DP strategy and the PMP strategy can reasonably allocate energy sources to achieve global optimization. But the calculation amount based on the DP strategy is larger than PMP strategy.

Key words: Plug-in hybrid electric vehicle; Energy management; CD-CS strategy; Dynamic programming

摘要： 针对一款串联型插电式混合动力公交车，文章基于 MTLALB 建立整车和各部件数值模型。 在中国典型城市公交工况下，建立基于全局优化的 DP 策略，并与 CD-CS 策略和 PMP 策略进行能 耗对比分析。结果表明：（1）基于 CD-CS 策略的后期 SOC 在一定范围内波动，DP 策略与 PMP 策略的 SOC 轨迹近似呈线性变化。（2）CD-CS 策略较 DP 策略的能耗成本高 22.68%，PMP 策略 比 DP 策略的能耗成本高 0.30%。DP 策略与 PMP 策略可以合理分配能量源，实现全局最优，但 DP 策略相比 PMP 策略计算量大。

关键词: PHEV；能量管理；CD-CS 策略；动态规划