Paper Info
Title
Nonlinear observer designs for state-of-charge estimation of Lithium-ion batteries
Abstract
State-of-Charge (SOC) information is very crucial for the control, diagnostics and monitoring of Li-ion cells/batteries. Compared to conventional data-driven or equivalent circuit models often employed in battery management systems, electrochemical battery models have the potential to give physically accurate the SOC information by tracking the Li-ion concentration in each electrode. In this paper, two nonlinear observer designs are presented to estimate Li-ion battery State-of-Charge based on reductions of an electrochemical model. The first observer design uses a constant gain Luenberger structure whereas the second one improves it by weighing the gain with the output Jacobian. For both observer designs, Lyapunov's direct method is applied and the design problems are converted to solving LMIs. Simulation results are included to demonstrate the effectiveness of both observer designs.
Year
DOI
Venue
2014
10.1109/ACC.2014.6858766
American Control Conference
Keywords
Field
DocType
Jacobian matrices,Lyapunov methods,battery management systems,electrochemical electrodes,equivalent circuits,linear matrix inequalities,observers,secondary cells,LMI,Li-ion cell-battery monitoring,Lyapunov direct method,SOC estimation,battery management system,constant gain Luenberger structure,electrochemical battery model,electrode,equivalent circuit model,lithium-ion battery,nonlinear observer design,output Jacobian,state-of-charge estimation,Control applications,Estimation,Observers for nonlinear systems
Computer science,Control theory,Nonlinear observer,Control engineering,Lithium,Ion,State of charge
Conference
ISSN
Citations 
PageRank 
0743-1619
3
0.54
References 
Authors
8
2
Name
Order
Citations
PageRank
Satadru Dey15510.95
Beshah Ayalew25612.79