Journal
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
Volume 57, Issue 12, Pages 3972-3979Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TIE.2010.2048832
Keywords
Accelerated aging; electrochemical capacitor; impedance spectroscopy; multipenetrability model; railway profile; supercapacitor; ultracapacitor
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One important part of the electrical transportation systems is the energy-storage system. This can be based, for example, on supercapacitors. In this paper, we propose to study its behavior under constraints similar to their uses in power and railway-traction systems. We define an adequate measurement protocol for accelerated aging which is applied to supercapacitors according to two accelerated factors: effective current and temperature. We model the supercapacitors for different states of health. The modeling gives a good estimation of the variation of electrical parameters of the supercapacitor at different states. We reveal general indicators of the supercapacitor's aging, and we discuss about its life cycle.
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