Energy distribution and shift strategy of modular electric heavy-duty vehicles based on FDP
ZHANG Ning
WANG Jun
LI Zi-hong
WANG Jin-xiang
YIN Guo-dong
OUYANG Tian-cheng
CHEN Zhuo
Abstract：For the dual powertrain configuration proposed in this paper,there is currently no energy management strategy that effectively balances vehicle economy and comfort.When using dynamic programming algorithms,there are problems such as slow computational efficiency,difficulty in online application,and interpolation leakage.This paper describes a method to optimize dynamic programming algorithms using reduced state-space feasible domains and gear-holding func-tions.Firstly,an economy-oriented strategy is proposed,and then the state space feasible domain of dynamic planning is reduced using the extracted rules,the method of selecting state of charge(SOC)as the state variable is discarded,and a perfect energy management strategy is obtained by adding a block holding function to the cost function.The results show that this strategy reduces the transmission gear switching and the number of motor start-stops dramatically at the cost of consuming very little more energy,effectively balancing the economy and comfort of the vehicle.
Keywords：electric heavy-duty vehiclemodularizationenergy management strategyfast dynamic programming
Publication Date：2025-08-30
Online Publishing Date：2025-10-10(First online date of this platform, not the publication date of the document)
Pages：9( 1561-1569 )