一种履带车辆三行星排混合动力系统构型优化设计方案
Optimization Design for a Hybrid Electric Powertrain System with Three-planetary Gear Sets of Tracked Vehicles
胡建军 1薛首志 2刘子睿2
作者信息
- 1. 重庆大学高端装备机械传动全国重点实验室,重庆 400044;重庆大学机械与运载工程学院,重庆 400044
- 2. 重庆大学机械与运载工程学院,重庆 400044
- 折叠
摘要
现有的双侧电机耦合驱动混合动力传动系统在行驶过程中会频繁产生能量二次转换现象,降低了整车运行效率.为进一步提升燃油经济性,提出一种三行星排履带车辆混合动力系统构型的优化设计方案.首先,以一款双电机耦合驱动结构的履带车辆动力传动系统为参考构型,在分析参考构型工作特性的基础上,对参考构型进行拆分,保留其主要的动力源部件和耦合机构,通过添加一组行星排,将发动机和发电机连入参考构型,生成基础拓扑结构方案.其次,提出一种改进邻接矩阵表达法,建立混合动力履带车辆动力传动系统不同工作模式下各部件之间的数学连接关系,完成对构型的生成和搜索,得到最优备选构型.最终,基于动态规划算法的全局最优控制策略对所生成备选构型方案的最佳经济性和最佳动力性能进行仿真分析,获得综合性能最优的混合动力履带车辆三行星排式动力传动系统构型方案.结果表明:所提出的三行星排式动力传动系统构型方案在保留参考构型相同转向性能的前提下,其0～60 km·h-1加速时间相对参考构型减少了38.33％,燃油经济性提升了 3.09％,证明了该研究构型生成与筛选方法的可行性,验证了最优构型方案的有效性.
Abstract
Existing hybrid electric powertrain systems with dual-motor coupling frequently undergo secondary energy conversion during operation,which reduces the operational efficiency of the tracked vehicles.To further enhance fuel economy,this study proposes an optimized design scheme for a hybrid electric powertrain system configuration for a three-planetary-gear tracked vehicle.First,the power transmission system of a tracked vehicle with a dual-motor coupling drive structure was used as the reference configuration,and the basis for the operating characteristics of the reference configuration was analyzed.The reference configuration was then split,and the main power-source components and coupling mechanism were retained.After a set of planetary rows were added,the engine and generator were connected to the reference configuration to generate the basic topological structural scheme.Second,an improved adjacency matrix expression method was proposed to accomplish the following:① establish the mathematical relationship between the components under different working modes of the hybrid electric powertrain system of a hybrid tracked vehicle,② complete the generation and search of the configuration,and ③ obtain the optimal alternative configuration.Finally,based on the global optimal control strategy for a dynamic programming algorithm,the optimal economy and dynamic performance of the generated alternative configuration scheme were simulated and analyzed,and the optimal configuration was obtained.Results show that the proposed three-planetary-gear hybrid electric powertrain configuration scheme retains the same steering performance as that of the reference configuration.The 0-60 km·h-1 acceleration time is reduced by 38.33％,and the fuel economy is improved by 3.09％as compared with the reference configuration.These results prove the feasibility of the configuration generation and search method proposed in this study and validates the effectiveness of the optimal configuration scheme.
关键词
机械工程/混合动力履带车辆/改进邻接矩阵/构型/动态规划算法Key words
mechanical engineering/hybrid tracked vehicle/improved adjacency matrix/configu-ration/dynamic programming algorithm引用本文复制引用
基金项目
国家自然科学基金项目(52172364)
重庆市技术创新与应用发展重大专项(CSTB2022TIAD-STX0005)
中央高校基本科研业务费专项资金项目(2022CDJDX-004)
出版年
2024
NETL
NSTL
万方数据