Title:
BATTERY ENERGY STORAGE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2014/199628
Kind Code:
A1
Abstract:
[Problem] To provide a battery energy storage system capable of, in a 3-phase 4-wire grid, controlling and storing each inter-phase power by a single device.
[Solution] A battery energy storage system (1) stores 3-phase 4-wire grid power and supplies power independently to each phase of the grid. The battery energy storage system comprises: a TOP battery and a BOTTOM battery connected in series; inverters (12u, 12v, 12w) for converting the DC powers of the TOP battery and the BOTTOM battery connected in series to the AC powers of the respective phases; and gate control circuits (11u, 11v, 11w) for independently controlling the switching operation of the respective inverters. In the battery energy storage system, a midpoint of the connection between the TOP battery and the BOTTOM battery is grounded as a neutral point, and each of the inverters has a 2-in-1 configuration in which two semiconductor elements each constituted by a switching element and a free-wheel diode are cascaded.
Inventors:
ENDO TAMOTSU
ROOSNO MARIA
KIUCHI MASAKO
ROOSNO MARIA
KIUCHI MASAKO
Application Number:
PCT/JP2014/003089
Publication Date:
December 18, 2014
Filing Date:
June 10, 2014
Export Citation:
Assignee:
TOSHIBA KK (JP)
International Classes:
H02J3/26; H02J3/32; H02J7/00; H02J7/02; H02M7/48
Foreign References:
| JPH11187576A | 1999-07-09 | |||
| JP2013021895A | 2013-01-31 | |||
| JP2003153463A | 2003-05-23 |
Attorney, Agent or Firm:
SAGOI, MASAYUKI (JP)
Masayuki Sunai (JP)
Masayuki Sunai (JP)
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