Title:
POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/214851
Kind Code:
A1
Abstract:
A power supply system converts AC power from a main power supply to DC power and outputs the DC power to a DC system (L). The power supply system comprises: a plurality of power conversion devices (10) that are mutually connected in parallel; a load condition detection unit that detects the operation condition of a load connected to the DC system (L); and a command generation unit (30) that generates a distribution voltage command Vref. Each of the plurality of power conversion devices (10) is provided with: a DC voltage control unit (212) that generates an output power command Pdc_ref on the basis of the voltage of the DC system (L) and the distribution voltage command Vref; and an AC/DC converter (21) that converts the AC power received from the main power supply (2) and outputs the power to the DC system (L) on the basis of the output power command Pdc_ref. On the basis of the detection result of the load condition detection unit, the command generation unit (30) generates the distribution voltage command Vref so as to reduce loss to the load connected to the DC system (L).
Inventors:
KATAOKA TAKUYA (JP)
IZUMI KIKUO (JP)
HIGAKI YUSUKE (JP)
IZUMI KIKUO (JP)
HIGAKI YUSUKE (JP)
Application Number:
PCT/JP2020/017133
Publication Date:
October 28, 2021
Filing Date:
April 21, 2020
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M3/00; H02J1/00; H02M7/12
Foreign References:
| JP2010158098A | 2010-07-15 | |||
| JPH09103032A | 1997-04-15 | |||
| JP2010183663A | 2010-08-19 | |||
| JP3419443B2 | 2003-06-23 | |||
| JP5092997B2 | 2012-12-05 |
Other References:
See also references of EP 4142132A4
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
Download PDF: