IEEJ Transactions on Electronics, Information and Systems
Online ISSN : 1348-8155
Print ISSN : 0385-4221
ISSN-L : 0385-4221
<Electrical and Electronic Circuit, LSI>
Supercapacitor Charging Technology with Digital Changes of the Duty Ratio
Shunji Nakata
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2017 Volume 137 Issue 10 Pages 1429-1430

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Abstract

An adiabatic circuit was designed for charging and discharging a supercapacitor stepwise. The duty ratio of the switching transistors is changed in a stepwise fashion and controlled by a microprocessor. The charging efficiency, that is the ratio between the work done by the power supply and electrostatic energy of the capacitor, is calculated from experimental results. The efficiency is 95% when the number of stepwise voltage is 32, which is consistent with the theoretical value.

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© 2017 by the Institute of Electrical Engineers of Japan
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