Voltage balancing of a 320-V, 12-F electric double-layer capacitor bank combined with a 10-kW bidirectional isolated DC-DC converter

Nadia Mei Lin Tan, Shigenori Inoue, Atsushi Kobayashi, Hirofumi Akagi

Research output: Contribution to journalArticle

68 Citations (Scopus)

Abstract

double-layer capacitors (EDLCs) have attributes that feature high power density, quick charge/discharge time, long life cycle, and environmental friendliness. These attributes accord for increased appeal in employing the EDLCs as energy-storage devices in renewable energy systems, industrial applications, and hybrid electric vehicles as compared to other mature static energy-storage devices. This paper describes the construction of a 320-V, 12-F EDLC energy-storage bank connected to a bidirectional isolated dc--dc converter. Two types of EDLC bank configurations are considered with emphasis on their voltage-balancing circuits. Subsequently, this paper proposes a voltage-balancing circuit based on a center-tapped transformer, and includes its experimental verifications. It also discusses the charge--discharge and self-starting operation of the EDLC energy-storage system. During the charge--discharge operation, a low ripple current flowing in the EDLC bank is observed, leading to a theoretical analysis. The EDLC bank is also successfully charged to its rated voltage without any external dc charging circuit.

Original languageEnglish
Pages (from-to)2755-2765
Number of pages11
JournalIEEE Transactions on Power Electronics
Volume23
Issue number6
DOIs
Publication statusPublished - 04 Dec 2008

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DC-DC converters
Energy storage
Electric potential
Networks (circuits)
Hybrid vehicles
Charge density
Industrial applications
Life cycle
Capacitors
Supercapacitor

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Cite this

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Voltage balancing of a 320-V, 12-F electric double-layer capacitor bank combined with a 10-kW bidirectional isolated DC-DC converter. / Tan, Nadia Mei Lin; Inoue, Shigenori; Kobayashi, Atsushi; Akagi, Hirofumi.

In: IEEE Transactions on Power Electronics, Vol. 23, No. 6, 04.12.2008, p. 2755-2765.

Research output: Contribution to journalArticle

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