Title:
DIRECT CURRENT POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/102565
Kind Code:
A1
Abstract:
The present invention reduces variance of service lives of a plurality of storage batteries. This direct current power supply system is provided with: a power conditioner 4b, which supplies generated power W2 of a power generation device 3b to a direct current bus 2; DC-DC converters 5a, 5b, which perform voltage conversion with respect to a bus voltage Vbs, and supply load power (WLa+WLb) to load apparatuses 71a, 71b; bidirectional DC-DC converters 142-14n, which supply a direct current constant current from the direct current bus 2 to storage batteries 112-11n, or from the storage batteries 112-11n to the direct current bus 2; and a power management device 9. The power management device 9 causes the converters 142-14n to charge the storage batteries 112-11n by supplying the direct current constant current to the storage batteries at a common current value when the generated power W2 is higher than the load power (WLa+WLb), and causes the converters 142-14n to discharge the storage batteries 112-11n by supplying the direct current constant current from the storage batteries to the direct current bus 2 at the common current value when the generated power W2 is lower than the load power (WLa+WLb).
Inventors:
MITSUNAGA TAKUMA (JP)
NAOI KATSUO (JP)
NAOI KATSUO (JP)
Application Number:
PCT/JP2017/042124
Publication Date:
May 31, 2019
Filing Date:
November 24, 2017
Export Citation:
Assignee:
TDK CORP (JP)
International Classes:
H02J1/00; H02J1/12; H02J7/34
Domestic Patent References:
| WO2012032776A1 | 2012-03-15 |
Foreign References:
| JP2014207790A | 2014-10-30 | |||
| JP2017189005A | 2017-10-12 | |||
| JP2012205488A | 2012-10-22 | |||
| JP2002330554A | 2002-11-15 | |||
| JP2013208001A | 2013-10-07 |
Attorney, Agent or Firm:
SAKAI Shinji (JP)
Download PDF: