插电式混合动力汽车能量管理策略优化研究

Research On Optimization Of Energy Management Strategy For Plug-in Hybrid Electric Vehicles

随着社会的发展,能源问题、环保问题,成为了发展汽车产业的重中之重,受到了各大企业和国家政府的广泛重视,所以对插电式混合动力公交车能量管理策略进行优化研究具有重大意义。文章基于西安市工况,对插电式混合动力公交车能量管理策略进行优化。首先选取了典型具有代表性的公交线路,通过短行程划分,主成分分析,K均值聚类获取代表西安市的道路工况。利用基于Matlab/simulink的advisor软件进行混合动力汽车动力系统的搭建。导入代表西安市的道路工况进行动力性仿真,燃油经济性仿真,得到相应结果。通过在万有特性图上自主选择发动机最佳工作点,对advisor底层m文件关键语句进行修改,再次进行多组仿真。将每组仿真结果的动力性,燃油经济性进行比较。最终实现了在保证动力性前提下,获取了更好的燃油经济性,从而实现了优化。

With the development of the society, energy and environmental protection issues have become the top priority in the development of the automobile industry, which has received extensive attention from major enterprises and the national government. Therefore, it is of great significance to optimize the energy management strategy of plug-in hybrid electric vehicles. Based on the xi'an working condition, this paper optimizes the energy management strategy of the plug-in hybrid vehicles. Firstly, the typical and representative bus routes are selected, and the road conditions representing xi'an city are obtained through short journey division, principal component analysis and k-means clustering.The power performance simulation and fuel economy simulation are carried out on the road condition of xi'an city, and the corresponding results are obtained. By independently selecting the best operating point of the engine on the universal characteristic diagram, the key statements of the underlying m file of advisor are modified, and multi-group simulation is conducted again.The dynamic performance and fuel economy of each group are compared. Finally, under the premise of ensuring the power performance, better fuel economy is obtained, and the optimization is realized.