Title:
DIRECT-CURRENT POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/161766
Kind Code:
A1
Abstract:
[Problem] To suppress variation in the charging rates of a plurality of storage batteries connected to a direct-current bus so as to prevent a reduction in the charge/discharge capability of the storage batteries as an entirety. [Solution] A direct-current power supply system 1 comprises: a direct-current bus 10 serving as the bus of a direct-current power supply; a natural energy power generation device 30 for supplying generated power to the direct-current bus 10; a load device 40 for receiving the supply of power from the direct-current bus 10; a plurality of bidirectional DC/DC converters 23A-23C connected to the direct-current bus 10; a plurality of storage batteries 50A-50C individually connected to the direct-current bus 10 via one of the plurality of bidirectional DC/DC converters 23A-23C; and a power management device 60 for managing the operation of the plurality of bidirectional DC/DC converters 23A-23C on the basis of the generated power, the load power, and the charging rates of the plurality of storage batteries. The power management device 60 controls the output voltages of the bidirectional DC/DC converters 23A-23C corresponding to each storage battery in accordance with the charging rate of each storage battery.
Inventors:
MITSUNAGA TAKUMA (JP)
Application Number:
PCT/JP2019/003849
Publication Date:
August 13, 2020
Filing Date:
February 04, 2019
Export Citation:
Assignee:
TDK CORP (JP)
International Classes:
H02J1/00; H02J1/12; H02J1/14; H02J7/00; H02J7/34; H02J7/35
Foreign References:
| US20170093187A1 | 2017-03-30 | |||
| JP2015220889A | 2015-12-07 |
Attorney, Agent or Firm:
WASHIZU Mitsuhiro et al. (JP)
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