Research on Parameter Self-Learning Unscented Kalman Filtering Algorithm and Its Application in Battery Charge of State Estimation

Energies

Jie Ma¹  Fang Liu¹  Hanning Chen¹  Maowei He¹  Weixing Su¹ 

[1] School of Computer Science & Technology, Tiangong University, Tianjin 300387, China;

关键词: unscented Kalman filter;    parameter identification;    battery management system;    state of charge;   

DOI  :  10.3390/en13071679

来源: DOAJ

【 摘 要 】

A novel state estimation algorithm based on the parameters of a self-learning unscented Kalman filter (UKF) with a model parameter identification method based on a collaborative optimization mechanism is proposed in this paper. This algorithm can realize the dynamic self-learning and self-adjustment of the parameters in the UKF algorithm and the automatic optimization setting Sigma points without human participation. In addition, the multi-algorithm collaborative optimization mechanism unifies a variety of algorithms, so that the identification method has the advantages of member algorithms while avoiding the disadvantages of them. We apply the combination algorithm proposed in this paper for state of charge (SoC) estimation of power batteries and compare it with other model parameter identification algorithms and SoC estimation methods. The results showed that the proposed algorithm outperformed the other model parameter identification algorithms in terms of estimation accuracy and robustness.

【 授权许可】

Unknown