混联型混合动力汽车能量管理策略优化  

Optimization of Energy Management Strategy for a Parallel-series HEV

作　　者：舒红[1] 刘文杰 袁景敏[1] 高银平[1] 

机构地区：[1]重庆大学机械传动国家重点实验室,重庆400044 [2]湖南南车时代电动汽车股份有限公司,株洲412001

出　　处：《农业机械学报》2009年第3期31-35,55,共6页Transactions of the Chinese Society for Agricultural Machinery

基　　金：重庆市自然科学基金资助项目(CSTC,2007BB0116)

摘　　要：对一种混联型混合动力系统运行工况进行了分析。基于发动机、电机和蓄电池的效率图,建立了混联型混合动力汽车充电工况和放电工况的系统效率模型。放电工况以系统放电效率最大为优化目标,充电工况根据蓄电池荷电状态不同,分别以系统充电效率最大、系统充电效率与充电功率乘积最大为优化目标,对混合动力系统能量管理策略进行了优化研究,获得了汽车在不同运行条件下的发动机、电动机和发电机的最优控制转矩及转速。燃油经济性仿真结果显示,该混合动力系统在NEDC循环工况下的整车燃油消耗降低36.95%。The driving modes of a parallel-series hybrid electric vehicle（HEV） were analyzed.The system efficiency models for the HEV at the charging and discharging mode were proposed based upon the engine efficiency map,motor/generator efficiency map and battery efficiency map.The optimization of energy management strategy for the hybrid system was studied,whose optimization target is the maximum of discharging efficiency at the discharging mode,and the maximum of charging efficiency,the maximum of charging efficiency and charging power at the charging mode with the different state of charge of battery,and the optimal control torque and speed for engine,motor and generator were obtained under the different driving conditions.The simulation of fuel economy shows that the decreasing ratio of fuel consumption of the hybrid system reaches 36.95%.

关 键 词：混合动力汽车 能量管理策略 优化 

分 类 号：U469.79[机械工程—车辆工程] U461.8[交通运输工程—载运工具运用工程]