Nonlinear model predictive control of vanadium redox flow battery

被引：11
作者：
Skupin, Piotr [1 ]
Ambati, Seshagiri Rao [2 ]
机构：
[1] Silesian Tech Univ, Dept Automatic Control & Robot, Ul Akademicka 16, PL-44100 Gliwice, Poland
[2] Indian Inst Petr & Energy, Dept Chem Engn, Visakhapatnam 530003, Andhra Pradesh, India
来源：
JOURNAL OF ENERGY STORAGE | 2023年 / 62卷
关键词：
Nonlinear model predictive control; Vanadium redox flow battery; Electrolyte imbalance; Parameter uncertainties; Closed-loop performance; ELECTROLYTE FLOW; RATE OPTIMIZATION; ALL-VANADIUM; CHARGE ESTIMATION; ROBUST MPC; STATE; MEMBRANE; CELL; PERFORMANCE; STRATEGY;
D O I：
10.1016/j.est.2023.106905
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：
In this paper, nonlinear model predictive controller (NMPC) is designed for stack voltage control in vanadium redox flow battery (VRFB) and the closed-loop performance is evaluated under different conditions. The controller is designed by using a simplified model of the VRFB system. The flow rate of electrolytes is the manipulated variable and the charging or discharging current is a disturbance. The unmeasured state variables (vanadium ions concentrations) and state of charge of the VRFB are estimated by measuring open-circuit voltage. Numerical simulations show the effectiveness of the NMPC under different operating conditions: when VRFB is balanced and its simplified model is perfectly known, when VRFB is imbalanced and some of its model pa-rameters are not accurately known, and in presence of measurement noise. In all these cases the predictive controller ensures very good tracking performance and rejection of disturbances.
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页数：10
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