Title:
POWER CONVERSION SYSTEM AND METERING METHOD
Document Type and Number:
WIPO Patent Application WO/2023/171100
Kind Code:
A1
Abstract:
In the present invention, a plurality of direct-current wattmeters (16a–16c) are respectively connected between a plurality of off-grid power sources (6–8) and a plurality of DC/DC converters (11a–11c). An alternating-current wattmeter (15) is connected between an inverter (12) and a distribution switchboard (3). The plurality of off-grid power sources (6–8) include a power generation device (6) that converts renewable energy into electrical energy, and a power storage device (7 or 8). A control unit (13) computes prorated percentages for a plurality of electric-power measurements made by the plurality of direct-current wattmeters (16a–16c) during a period in which current flows in a direction from the inverter (12) to the distribution switchboard (3), and on the basis of the prorated percentages and electric-power measurements made by the alternating-current wattmeter (15), meters the amount of power generation by the power generation device (6).
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Inventors:
YUASA HIROAKI
KAJIWARA SHOGO
TERASAWA AKIRA
NORITAKE YOSHINORI
KAJIWARA SHOGO
TERASAWA AKIRA
NORITAKE YOSHINORI
Application Number:
PCT/JP2022/048514
Publication Date:
September 14, 2023
Filing Date:
December 28, 2022
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02J3/38; H02J3/32; H02J13/00
Foreign References:
| JP2011120452A | 2011-06-16 | |||
| JP2022019806A | 2022-01-27 | |||
| JP2021052488A | 2021-04-01 | |||
| JP2013258845A | 2013-12-26 |
Attorney, Agent or Firm:
MUNETA Satoshi (JP)
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