Title:
POWER STORAGE SYSTEM
Document Type and Number:
Japanese Patent JP2017034840
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To enable charge control by correctly calculating a surplus current, without modifying the existing power distribution board.SOLUTION: A power storage system includes: a surplus current calculation circuit 6A which calculates a surplus current to a breaker 22, to generate and output a command value to charge and discharge a storage battery; and a current converter 6B which sets the charge current of the storage battery on the basis of the command value. The surplus current calculation circuit includes: a first calculation unit which calculates a difference between a total current value flowing through L1 and L2 lines and a set capacity of the breaker; a second calculation unit which obtains a minimum difference between the current flowing through the L1 and L2 lines and the set capacity of the breaker; and a set signal selection unit which selects either a signal from the first calculation unit or a signal from the second calculation unit, on the basis of a breaker type.SELECTED DRAWING: Figure 1
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Inventors:
OMORI KAZUNORI
Application Number:
JP2015152339A
Publication Date:
February 09, 2017
Filing Date:
July 31, 2015
Export Citation:
Assignee:
NEC CORP
International Classes:
H02J7/10; H02J3/14
Domestic Patent References:
| JP2012253952A | 2012-12-20 | |||
| JP2012060752A | 2012-03-22 | |||
| JP2010166768A | 2010-07-29 | |||
| JP2011019363A | 2011-01-27 |
Foreign References:
| WO2014010025A1 | 2014-01-16 | |||
| WO2015011815A1 | 2015-01-29 | |||
| US20130141040A1 | 2013-06-06 |
Attorney, Agent or Firm:
Masahiko Desk
Naoki Shimosaka
Naoki Shimosaka