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## Impact of balance resistor uncertainty on voltages across supercapacitors

Barić, T.; Glavaš, H.; Barukčić, M.
Impact of balance resistor uncertainty on voltages across supercapacitors // Journal of energy storage, 22 (2019), 131-136 doi:10.1016/j.est.2019.02.005 (međunarodna recenzija, članak, znanstveni)

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Naslov
Impact of balance resistor uncertainty on voltages across supercapacitors

Autori
Barić, T. ; Glavaš, H. ; Barukčić, M.

Izvornik
Journal of energy storage (2352-152X) 22 (2019); 131-136

Ključne riječi
Balancing ; Electric double layer capacitor ; Supercapacitor ; Ultracapacitor ; Uncertainty ; Voltage balancing ; Voltage distribution

Sažetak
In some applications, due to a relative low operating voltage of a supercapacitor cell, it is necessary to connect it in series to achieve a required operating voltage. However, due to the variation of supercapacitor parameters, there is a voltage imbalance across the supercapacitors connected in series, hence they should be balanced (equalized) by means of an appropriate technique. For this purpose, several active and passive balancing techniques are used. In this paper, the technique of passive voltage balancing using resistors is described. The phenomenon and the physical cause of voltage imbalance on supercapacitor (SC) cells are explained in detail. The paper gives a mathematical model that accurately describes voltage balancing using resistors. An uncertainty analysis was introduced to describe the expected voltage variation of supercapacitors before and after passive voltage balancing using resistors. All relevant expressions which determine the expected voltage variation before and after implementation of voltage balancing are derived. The derived expressions allow determination of voltage variance and uncertainty on SCs in the most unfavorable case of voltage imbalance. Based on the presented theory and derived expressions, the guidelines in the implementation of passive techniques for voltage balancing using resistors are given.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

Ustanove:
Fakultet elektrotehnike, računarstva i informacijskih tehnologija Osijek

Profili:

Tomislav Barić (autor)

Marinko Barukčić (autor)

Hrvoje Glavaš (autor)

#### Citiraj ovu publikaciju

Barić, T.; Glavaš, H.; Barukčić, M.
Impact of balance resistor uncertainty on voltages across supercapacitors // Journal of energy storage, 22 (2019), 131-136 doi:10.1016/j.est.2019.02.005 (međunarodna recenzija, članak, znanstveni)
Barić, T., Glavaš, H. & Barukčić, M. (2019) Impact of balance resistor uncertainty on voltages across supercapacitors. Journal of energy storage, 22, 131-136 doi:10.1016/j.est.2019.02.005.
@article{article, year = {2019}, pages = {131-136}, DOI = {10.1016/j.est.2019.02.005}, keywords = {Balancing, Electric double layer capacitor, Supercapacitor, Ultracapacitor, Uncertainty, Voltage balancing, Voltage distribution}, journal = {Journal of energy storage}, doi = {10.1016/j.est.2019.02.005}, volume = {22}, issn = {2352-152X}, title = {Impact of balance resistor uncertainty on voltages across supercapacitors}, keyword = {Balancing, Electric double layer capacitor, Supercapacitor, Ultracapacitor, Uncertainty, Voltage balancing, Voltage distribution} }
@article{article, year = {2019}, pages = {131-136}, DOI = {10.1016/j.est.2019.02.005}, keywords = {Balancing, Electric double layer capacitor, Supercapacitor, Ultracapacitor, Uncertainty, Voltage balancing, Voltage distribution}, journal = {Journal of energy storage}, doi = {10.1016/j.est.2019.02.005}, volume = {22}, issn = {2352-152X}, title = {Impact of balance resistor uncertainty on voltages across supercapacitors}, keyword = {Balancing, Electric double layer capacitor, Supercapacitor, Ultracapacitor, Uncertainty, Voltage balancing, Voltage distribution} }

#### Časopis indeksira:

• Web of Science Core Collection (WoSCC)
• Science Citation Index Expanded (SCI-EXP)
• SCI-EXP, SSCI i/ili A&HCI
• Scopus

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