Mechanism and Data-Driven Fusion SOC Estimation

被引:0
|
作者
Tian, Aijun [1 ]
Xue, Weidong [2 ]
Zhou, Chen [2 ]
Zhang, Yongquan [2 ]
Dong, Haiying [2 ]
机构
[1] Lanzhou Haihong Technol Co Ltd, Lanzhou 730050, Peoples R China
[2] Lanzhou Jiaotong Univ, Coll New Energy & Power Engn, Lanzhou 730070, Peoples R China
关键词
SOC estimation; data driven; mechanism; dataset training; BATTERY; MODEL; STATE;
D O I
10.3390/en17194931
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
An accurate assessment of the state of charge (SOC) of electric vehicle batteries is critical for implementing frequency regulation and peak shaving. This study proposes mechanism- and data-driven SOC fusion calculation methods. First, a second-order Thevenin battery model is developed to obtain the physical parameters of the battery. Second, data from the Thevenin battery model and data from four standard cycling conditions in the electric vehicle industry are added to the dataset of the feed-forward neural network data-driven model to construct the test and training sets of the data-driven model. Finally, the error of the mechanism and data-driven fusion modeling method is quantitatively analyzed by comparing the estimation error of the method for the battery SOC at different temperatures with the accuracy of the data-driven SOC estimation method. The simulation results show that the root mean square error, the mean age absolute error, and the maximum error of mechanism and data-driven method for the estimation error of battery SOC are lower than those of the data-driven method by 0.9%, 0.65%, and 1.3%, respectively. The results show that the mechanism and data-driven fusion SOC estimation method has better generalization performance and higher SOC estimation accuracy.
引用
收藏
页数:16
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