DocumentCode :
2802354
Title :
Advanced lithium ion battery modeling and power stage integration technique
Author :
Ramamurthy, Anand ; Notani, Shailesh ; Bhattacharya, Subhashish
Author_Institution :
North Carolina State Univ., Raleigh, NC, USA
fYear :
2010
fDate :
12-16 Sept. 2010
Firstpage :
1485
Lastpage :
1492
Abstract :
This paper focuses on the system modeling aspect of energy storage, power conversion and digital power control involved in non-renewable power systems. Lithium based batteries, the energy storage devices were modeled at different state of charges (SOC) using Electro chemical Impedance Spectroscopy (EIS). EIS based impedance measurements were fitted to a standard electrochemical battery model. The AC impedance model of the battery was integrated to the power supply control loop. The battery impedance changes with SOC of the battery and its effect on the control loop was observed. Based on the battery impedance based control loop performance, a dynamic compensation technique was proposed to optimally stabilize different control loops in the battery charging cycle. The system model and design aspects were verified using a synchronous buck based charging system.
Keywords :
digital control; electrochemical impedance spectroscopy; lithium; power control; power conversion; secondary cells; AC impedance model; EIS; Li; SOC; advanced lithium ion battery modeling; battery charging cycle; control loop performance; digital power control; dynamic compensation technique; electrochemical impedance spectroscopy; energy storage devices; impedance measurements; nonrenewable power systems; power conversion; power stage integration technique; power supply control loop; standard electrochemical battery model; state of charges; synchronous buck-based charging system; Batteries; Charge transfer; Electrodes; Equivalent circuits; Impedance; Integrated circuit modeling; Resistance; Battery model; Control Loop; EIS; Lithium Batteries;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2010 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-5286-6
Electronic_ISBN :
978-1-4244-5287-3
Type :
conf
DOI :
10.1109/ECCE.2010.5618249
Filename :
5618249
Link To Document :
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