摘要
提出一种PHEV的实时控制系统。首先,以最小燃油消耗为性能指标,采用动态规划(DP)算法求解标准工况得到最优解,通过对最优解进行分析,将最优控制存储于Map;然后,以SoC为反馈变量建立反馈能量管理系统,为了充分利用电池存储的电能,结合电荷耗尽⁃电荷维持策略(CDCS)引入参考SoC;最后,在标准工况下进行仿真,并与使用DP算法的仿真结果进行对比。仿真结果表明,该实时控制器的油耗接近于使用DP算法的油耗,且在驾驶工况距离已知情况下能够令SoC很好地跟随参考SoC,以充分利用动力电池存储的电能,从而有效降低燃油消耗。
A real⁃time control system for plug⁃in hybrid electric vehicles(PHEVs)is proposed.In the system,with the minimum fuel consumption as the performance index,the dynamic programming(DP)is used to solve the driving cycles to obtain the optimal solution.The optimal control is stored at Map by analyzing the optimal solution.And then,a feedback energy management system is built by taking SoC as the feedback variable.The reference SoC is introduced in combination with the charge depletion⁃charge sustaining(CDCS)strategy to make full use of the energy stored in the battery.Finally,a comparative simulation is conducted under the condition of driving cycles to compare the fuel consumption of the real controller and that of the DP algorithm.The simulation results show that the fuel consumption value of the former is close to that of the later.In addition,the SoC can follow the reference SoC well when the distance of the driving cycles is known,which makes full use of the energy stored in the battery,so as to reduce the fuel consumption.
作者
王魏
蔡振江
刘少飞
WANG Wei;CAI Zhenjiang;LIU Shaofei(College of Mechanical and Electrical Engineering,Hebei Agricultural University,Baoding 071001,China;Powertrain Center of BAIC Motor Corporation,Beijing 101106,China)
出处
《现代电子技术》
2021年第9期129-135,共7页
Modern Electronics Technique
基金
863计划“混合动力发动机开发”(2017YFB0103404)。
