混联式商用车动力系统控制策略研究  

Research on the Control Strategy of the Power System for Hybrid Commercial Vehicle

作　　者：柳楠 翟美玉 马治 吴合旭 刘畅 Liu Nan;Zhai Meiyu;Ma Zhi;Wu Hexu;Liu Chang(FAW Jiefang Automobile Co.,Ltd.,Changchun 130011)

机构地区：[1]一汽解放汽车有限公司,长春130011

出　　处：《汽车工程师》2025年第2期9-13,21,共6页Automotive Engineer

摘　　要：为提升某款混联式商用车的燃油经济性,提出了综合考虑发动机油耗、行星排机械损失、电机发电/驱动/空转的功率损失、控制器功率损失、机械能与电能换算关系等因素的系统综合效率最优的发动机转速控制策略。建立了混联式动力系统的数学模型和控制模型,并以动力系统效率最高为目标,通过大量数据迭代获得发动机转速和扭矩的最优解。仿真结果表明,与基于发动机效率最优的转速控制策略相比,动力系统综合效率最优的转速控制策略在循环工况下使整车油耗降低了7.9%,最后搭建混联式动力系统台架,验证了控制策略的有效性,且燃油经济性优化效果较为显著。To enhance the fuel economy of the certain series-parallel hybrid commercial vehicle,a control strategy for optimizing engine speed based on the overall system efficiency has been proposed.This strategy comprehensively considers factors such as engine fuel consumption,planetary gear set mechanical losses,power losses during motor generation/driving/idling,controller power losses,and the conversion relationship between mechanical and electrical energy.Mathematical and control models for the series-parallel hybrid powertrain system have been established,with the objective of maximizing powertrain efficiency.Through iterative analysis of vast amounts of data,optimal solutions for engine speed and torque have been obtained.Simulation results indicate that,compared to a speed control strategy based solely on optimizing engine efficiency,the proposed strategy for optimizing overall system efficiency reduces vehicle fuel consumption by 7.9%under cyclic operating conditions.Finally,a series-parallel hybrid powertrain test bench is set up to verify the effectiveness of the control strategy,and the optimization effect on fuel economy is found to be significant.

关 键 词：混联式混合动力 PYTHON 燃油经济性 控制策略 

分 类 号：U462.2[机械工程—车辆工程] U462.3[交通运输工程—载运工具运用工程]