Parameter-Independent Battery Control Based on Series and Parallel Impedance Emulation

Appropriate voltage control is essential in order to extend the useful life of a battery. However, when universal chargers are used, the design of this control becomes more complicated, given the fact that the battery impedance value may vary considerably, depending not only on the operating point b...

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Bibliographic Details
Published inIEEE access Vol. 7; pp. 70021 - 70031
Main Authors Urtasun, Andoni, Sanchis, Pablo, Guinjoan, Francesc, Marroyo, Luis
Format Journal Article Publication
LanguageEnglish
Published Piscataway IEEE 01.01.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Institute of Electrical and Electronics Engineers (IEEE)
Subjects
Batteries
Battery charger
Battery chargers
Battery management
Charging
Control systems design
Electric potential
Electronic equipment
Emulation
Enginyeria elèctrica
Feedback loop
Impedance
Inductors
Maquinària i aparells elèctrics
Reguladors de voltatge
Resistance
Robust control
Virtual impedance emulation
Voltage
Voltage control
Voltage regulators
Àrees temàtiques de la UPC
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Summary:Appropriate voltage control is essential in order to extend the useful life of a battery. However, when universal chargers are used, the design of this control becomes more complicated, given the fact that the battery impedance value may vary considerably, depending not only on the operating point but also on the type, size, and aging level of the battery. This paper first shows how the voltage regulation can become extremely variable or even unstable when the controller is designed according to the proposals in the literature. We then go on to propose the emulation of a series and parallel impedance with the battery, which is easy to implement and achieves a control that is completely independent of the battery connected. The simulation results obtained for batteries with resistances ranging from 10 <inline-formula> <tex-math notation="LaTeX">\text{m}\Omega </tex-math></inline-formula> to 1 <inline-formula> <tex-math notation="LaTeX">\Omega </tex-math></inline-formula>, show the problems with existing controls and confirm that the proposed control response is similar for all the possible range of battery resistance.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2019.2919275