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US 10,790,698 B2Granted
Uninterruptible power supply system and uninterruptible power supply
AssigneeFuji Electric Co., Ltd.
InventorKazuyoshi Umezawa
Life of this patent
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Abstract
A plurality of uninterruptible power supplies of an uninterruptible power supply system controls start or stop of shared current supply from power converters to a load based on shared current commands, which indicate command values for determining a value of shared current to be supplied from the power converters of the plurality of uninterruptible power supplies to the load.
Claims19
An uninterruptible power supply system, comprising:
- a plurality of uninterruptible power supplies connected in parallel to each other to a load, wherein
- each of the plurality of uninterruptible power supplies includes a power converter that supplies current to the load and a controller, and
- the controller included in each of the plurality of uninterruptible power supplies controls start or stop of shared current supply from the power converter based on a shared current command in the power converter of its uninterruptible power supply, generated based on current shunted to the power converter of its uninterruptible power supply and the power converter of another uninterruptible power supply that are performing parallel operation.
An uninterruptible power supply comprising:
- a power converter that shares and supplies current to a load;
- and
- a controller that controls start or stop of shared current supply from the power converter based on a shared current command in its power converter, generated based on current shunted to its power converter and another power converter that are performing parallel operation.
Dependencies are inferred from the claim text.