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Equivalent circuit model for electric double layer capacitors and its applications
Author(s) -
Yamashiro Susumu,
Nakamura Koichi
Publication year - 2012
Publication title -
electrical engineering in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.136
H-Index - 28
eISSN - 1520-6416
pISSN - 0424-7760
DOI - 10.1002/eej.21300
Subject(s) - capacitance , capacitor , equivalent circuit , voltage , constant (computer programming) , electronic engineering , computer science , electric double layer capacitor , differential capacitance , electrical engineering , materials science , control theory (sociology) , topology (electrical circuits) , engineering , physics , control (management) , electrode , quantum mechanics , artificial intelligence , programming language
For a better understanding and detailed analysis of the electric behavior of EDLCs, we present one dynamic equivalent circuit model and two static ones, each of which consists of a resistance and a capacitance varying with voltage. A dynamic model based on the differential capacity is used to simulate the discharging curves. Also, two static models based on the integral and the effective capacity are used to estimate the energy efficiency and constant current charging–discharging time. Owing to the same energy‐oriented approach as is used in defining the effective capacity, the static model based on this capacity shows its superiority in estimating the efficiency and capacitance over another static model based on the integral capacity. © 2012 Wiley Periodicals, Inc. Electr Eng Jpn, 180(4): 29–37, 2012; Published online in Wiley Online Library ( wileyonlinelibrary.com ). DOI 10.1002/eej.21300