Title:
MODULE TYPE UNINTERRUPTIBLE POWER SUPPLY DEVICE AND UNINTERRUPTIBLE POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2023/089683
Kind Code:
A1
Abstract:
A first current detector (CT1) detects the output current of a module type uninterruptible power supply device. A plurality of first control circuits (6) are provided corresponding to each of a plurality of power conversion modules. The power conversion modules each include resistance elements (11) and second switches (S5). The second switches (S5) connect the first current detector (CT1) and the resistance elements (11) in parallel with each other in an on-state. The first control circuits (6) are each configured so as to turn on the second switches (S5) when bringing the corresponding power conversion module into an operation state and, meanwhile, to turn off the second switches (S5) when bringing the power conversion module into a stop state. The first control circuits each detect the shared current of the corresponding power conversion module on the basis of the currents flowing through the resistance elements when the second switches (S5) are in the on-state. The first control circuits each control a power converter so that the output current of the power conversion module becomes the shared current.
Inventors:
IMANISHI RYOGO (JP)
Application Number:
PCT/JP2021/042184
Publication Date:
May 25, 2023
Filing Date:
November 17, 2021
Export Citation:
Assignee:
TOSHIBA MITSUBISHI ELEC IND (JP)
International Classes:
H02J9/06
Domestic Patent References:
| WO2017009998A1 | 2017-01-19 | |||
| WO2014199796A1 | 2014-12-18 | |||
| WO2019003332A1 | 2019-01-03 |
Foreign References:
| JPH07135777A | 1995-05-23 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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