Experimental discussion on a 6-kW, 2-kWh battery energy storage system using a bidirectional isolated DC/DC converter

Takahiro Abe, Nadia Mei Lin Tan, Hirofumi Akagi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

This paper presents an experimental discussion on a 6-kW, full-bridge, zero-voltage switching bidirectional isolated dc/dc converter for a 53.2-V, 2-kWh Li-ion battery energy storage system. The combination of high-frequency switching devices, 600-V/200-A IGBTs and 100-V/500-A MOSFETs with a high-frequency transformer reduces the weight and physical size of the bidirectional isolated dc/dc converter. The dc voltage on the high-voltage side of the converter is controlled in a range of 300V to 355V as the battery voltage on the low-voltage side varies from 50V to 59V. Experimental verification of bidirectional power flow into (battery charging) or out of (battery discharging) the Li-ion battery bank is also presented. The maximal efficiency of the dc/dc converter is measured to be 98.1% during charging and 98.2% during discharging, excluding the gate drive loss and control circuit loss.

Original languageEnglish
JournalIEEJ Transactions on Industry Applications
Volume132
Issue number2
DOIs
Publication statusPublished - 13 Feb 2012

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DC-DC converters
Energy storage
Electric potential
High frequency transformers
Charging (batteries)
Zero voltage switching
Insulated gate bipolar transistors (IGBT)
Switching frequency
Networks (circuits)
Lithium-ion batteries

All Science Journal Classification (ASJC) codes

  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

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Experimental discussion on a 6-kW, 2-kWh battery energy storage system using a bidirectional isolated DC/DC converter. / Abe, Takahiro; Tan, Nadia Mei Lin; Akagi, Hirofumi.

In: IEEJ Transactions on Industry Applications, Vol. 132, No. 2, 13.02.2012.

Research output: Contribution to journalArticle

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