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Various Discussions and Improvements of Voltage Equalizer for EDLCs Including Secondary Batteries

Authors:
Keiju Matsui
Kouhei Yamakita
Masaru Hasegawa

Keywords: EDLC, Voltage Equalizer, Secondary Battery, Cockcroft-Walton, Buck-boost

Abstract:
Among various storage devices, EDLCs offer high energy density and long life span, so a lot of applications may be anticipated in the realm of energy storage devices, such as those used in electric vehicles or electric power stabilization in power systems, etc. However, since the voltage limit of the devices is low, it is necessary to connect them in series or parallel. In addition, it is required that they be used in the region of their critical voltage limit or capacity limit. In order to apply them efficiently, the devices should be used with balanced voltage. In this paper, a novel voltage equalizer and modified versions are presented, employing a CW(Cockcroft-Walton) circuit. Characteristics of proposed circuit are analyzed and improved especially about charging response and charging capability.

Pages: 31 to 36

Copyright: Copyright (c) IARIA, 2012

Publication date: August 19, 2012

Published in: conference

ISSN: 2308-426X

ISBN: 978-1-61208-213-4

Location: Rome, Italy

Dates: from August 19, 2012 to August 24, 2012