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Patent Searching and Data


Title:
DIRECT-CURRENT BUS CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/103059
Kind Code:
A1
Abstract:
This direct-current bus control system for controlling power variation in a direct-current bus connecting an input power supply and a load comprises: a main stabilization device including a first charge/discharge element and a first power converter; and at least one sub-stabilization device including a second charge/discharge element, a charge element, or a discharge element and a second power converter. The first power converter is configured to determine a bus voltage target value corresponding to a stored electricity amount index of the first charge/discharge element, and is configured to bilaterally exchange direct-current power between the first charge/discharge element and the direct-current bus in such a way that the voltage of the direct-current bus matches the bus voltage target value. The second power converter is configured to determine a current target value in accordance with a difference between a threshold value relating to charging or discharging of the second charge/discharge element, the charge element, or the discharge element and the voltage of the direct-current bus, and is configured to exchange direct-current power between the second charge/discharge element, the charge element, or the discharge element and the direct-current bus in such a way that a current equal to the current target value flows through the second charge/discharge element, the charge element, or the discharge element.

Inventors:
YAMASHITA, Daiji (2-1 Hirosawa, Wako-sh, Saitama 98, 〒3510198, JP)
SUGIYAMA, Masakazu (2-1 Hirosawa, Wako-sh, Saitama 98, 〒3510198, JP)
TSUNO, Katsuhiko (2-1 Hirosawa, Wako-sh, Saitama 98, 〒3510198, JP)
KOIKE, Kayo (2-1 Hirosawa, Wako-sh, Saitama 98, 〒3510198, JP)
FUJII, Katsushi (2-1 Hirosawa, Wako-sh, Saitama 98, 〒3510198, JP)
WADA, Satoshi (2-1 Hirosawa, Wako-sh, Saitama 98, 〒3510198, JP)
Application Number:
JP2018/043064
Publication Date:
May 31, 2019
Filing Date:
November 21, 2018
Export Citation:
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Assignee:
RIKEN (2-1 Hirosawa, Wako-shi Saitama, 98, 〒3510198, JP)
International Classes:
H02J1/00; H02J1/12; H02J3/32; H02J3/38; H02J7/10; H02J7/35
Domestic Patent References:
WO2013145618A12013-10-03
WO2013145658A12013-10-03
Foreign References:
JP2006129585A2006-05-18
JP2012095418A2012-05-17
JP2015130732A2015-07-16
JP2005224009A2005-08-18
JP2017175888A2017-09-28
Attorney, Agent or Firm:
ITOH, Tadashige et al. (16th Floor, Marunouchi MY PLAZA 1-1, Marunouchi 2-chome, Chiyoda-k, Tokyo 05, 〒1000005, JP)
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