TY - GEN
T1 - On power losses in switched supercapacitor circuits
AU - Kushnerov, Alexander
AU - Bukashev, Fedor
N1 - Publisher Copyright:
© 2014 IEEE.
PY - 2014/12/9
Y1 - 2014/12/9
N2 - Based on the Westerlund-Ekstam model, the paper presents an estimation of power losses in an elementary switched supercapacitor circuit. The power losses are found analytically and represented in the form of equivalent resistance. It is shown that as compared to an ideal capacitor, the use of supercapacitor is preferred at low switching frequency, f <1/(5RC). In addition, a straightforward method to obtain the parameters of the lumped element model of supercapacitor is proposed. The theoretical results were verified by simulations. Possible applications of the obtained results include characterization of the supercapacitors in the time-domain and equalizing the voltages across serially connected supercapacitors.
AB - Based on the Westerlund-Ekstam model, the paper presents an estimation of power losses in an elementary switched supercapacitor circuit. The power losses are found analytically and represented in the form of equivalent resistance. It is shown that as compared to an ideal capacitor, the use of supercapacitor is preferred at low switching frequency, f <1/(5RC). In addition, a straightforward method to obtain the parameters of the lumped element model of supercapacitor is proposed. The theoretical results were verified by simulations. Possible applications of the obtained results include characterization of the supercapacitors in the time-domain and equalizing the voltages across serially connected supercapacitors.
KW - Electrochemical capacitor
KW - Fractional derivative
KW - Lumped element model
KW - Ultracapacitor
UR - http://www.scopus.com/inward/record.url?scp=84920517376&partnerID=8YFLogxK
U2 - 10.1109/EPEPEMC.2014.6980656
DO - 10.1109/EPEPEMC.2014.6980656
M3 - Conference contribution
AN - SCOPUS:84920517376
T3 - 16th International Power Electronics and Motion Control Conference and Exposition, PEMC 2014
SP - 1100
EP - 1103
BT - 16th International Power Electronics and Motion Control Conference and Exposition, PEMC 2014
PB - Institute of Electrical and Electronics Engineers
T2 - 16th International Power Electronics and Motion Control Conference and Exposition, PEMC 2014
Y2 - 21 September 2014 through 24 September 2014
ER -