US 12,470,069 B2
DC power supply system
Masaki Nakamura, Chiyoda-ku (JP); Tomoki Tatsuno, Chiyoda-ku (JP); and Kazuhiko Takeno, Chiyoda-ku (JP)
Assigned to NTT DOCOMO, INC., Tokyo (JP)
Appl. No. 18/836,088
Filed by NTT DOCOMO, INC., Tokyo (JP)
PCT Filed Jan. 12, 2023, PCT No. PCT/JP2023/000683
§ 371(c)(1), (2) Date Aug. 6, 2024,
PCT Pub. No. WO2023/176115, PCT Pub. Date Sep. 21, 2023.
Claims priority of application No. 2022-039126 (JP), filed on Mar. 14, 2022.
Prior Publication US 2025/0158412 A1, May 15, 2025
Int. Cl. H02J 3/38 (2006.01); H02J 3/32 (2006.01); H02J 7/00 (2006.01); H02J 7/35 (2006.01)
CPC H02J 3/38 (2013.01) [H02J 3/32 (2013.01); H02J 7/00712 (2020.01); H02J 7/35 (2013.01); H02J 2300/24 (2020.01)] 14 Claims
OG exemplary drawing
 
1. A direct current (DC) power supply system having a rectifier connected to commercial power and configured to supply electric power to a load device and a solar power generation process of supplying electric power to the load device, the DC power supply system comprising:
a power consumption acquisition unit configured to acquire power consumption of the load device corresponding to an operation state of the load device;
an output power acquisition unit configured to acquire output power from the rectifier;
a generated solar power acquisition unit configured to acquire electric power generated in the solar power generation process on the basis of the power consumption and the output power; and
a voltage control unit configured to control a rectifier voltage of the rectifier so that the electric power generated in the solar power generation process is increased.