Optimal Energy Control Strategy of PHEV Based on the Pontryagin’s Minimum Principle Algorithm

Research Area: Volume 10,Issue 1,Jan.,2021 Year: 2021
Type of Publication: Article Keywords: Plug-in Hybrid Electric Vehicle, CD, CS, PMP, ECMS, MATLAB, Simulink, Cruise
  • Shicheng Li
  • Ruijun Liu
  • Dapai Shi
  • Ting Luo
  • Shipeng Li
  • Zhao Bi
Journal: IJEIR Volume: 10
Number: 1 Pages: 9-28
Month: January
ISSN: 2277-5668
In order to improve the fuel economy of plug-in hybrid electric vehicles (PHEVs), the energy control strategy of the whole vehicle is optimized. Firstly, the optimization methods of different energy control strategies are analyzed, and the Pontryagin's Minimum Principle (PMP) and the equivalent fuel consumption theory are selected as the optimal control algorithm. Secondly, the configuration of PHEV and the research objectives of the power control system are determined. Thirdly, the energy control problem is analyzed by the PMP theory, and the improvement measures for the energy control problem are put forward by the minimum control theory of the equivalent fuel consumption. Fourthly, after analyzing the relationship between the equivalent fuel factor and reference SOC, the equivalent minimum fuel consumption strategy (ECMS) energy control model is established by MATLAB/Simulink. Finally, combined with Cruise software, the PHEV simulation model is simulated, and the simulation results are analyzed. The results show that compared with the CD/CS energy control strategy, the ECMS energy control strategy reduced the 100 km fuel consumption of the vehicle by 8.93% under 6 times NEDC driving conditions.

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