Research on Multi-objective EMS of Fuel Cell Hybrid Electric Vehicle under Car Following Scenario Based on Deep Reinforcement Learning

doi:10.3901/JME.2025.12.191

Abstract

Abstract: In order to improve the economy and safety of fuel cell hybrid electric vehicle(FCHEV), the energy management of hybrid power system output power distribution under car following scenario was studied. The research on the multi-objective energy management of FCHEV under car following scenario was divided into upper adaptive cruise control(ACC) strategy and lower energy management strategy(EMS). The proposed upper ACC strategy takes car following safety, driving comfort and economy into the scope of car following optimization constraints through deep deterministic policy gradient(DDPG), through controlling the acceleration of the rear vehicle to achieve car following of the front vehicle. The proposed lower level EMS strategy takes hydrogen consumption, state of charge(SOC) constraints, temperature of Lithium Ion Battery(LIB) and power system life control as optimization objectives, and realizes multi-objective power optimization allocation based on deep reinforcement learning. By coupling ACC and EMS, in which ACC provides EMS with the required power for vehicle movement, and EMS feeds back the hydrogen consumption, the economy of car following scenario can be further improved and the amount of calculation can be reduced. The simulation results show that under the proposed upper level car following control, the relative speed and following distance errors are 0.47 m∙s^-1 and 1.14 m, respectively, indicating good following performance; The proposed multi-objective EMS can reduce hydrogen consumption by 1.8% compared with the single objective strategy, and has a more stable SOC performance. The LIB temperature rise and life degradation are reduced by 63% and 83% respectively, and the comprehensive economic cost is reduced by 51%; Under car following scenario, compared with the traditional ACC, the proposed ACC-EMS framework further reduces the hydrogen consumption by 2.9% to ensure the safety, comfort and economy of FCHEV during car following process.

Key words: fuel cell hybrid electric vehicle, deep reinforcement learning, car following control, energy management

CLC Number:

U469

CAO Yanxu, WEI Zhongbao, SONG Ruoyang, HE Hongwen. Research on Multi-objective EMS of Fuel Cell Hybrid Electric Vehicle under Car Following Scenario Based on Deep Reinforcement Learning[J]. Journal of Mechanical Engineering, 2025, 61(12): 191-203.

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URL: http://www.cjmenet.com.cn/EN/10.3901/JME.2025.12.191

http://www.cjmenet.com.cn/EN/Y2025/V61/I12/191

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