Power supply device, power supply system, and power supply method

Abstract

To provide a power supply device, a power supply system, and a power supply method that can be applied as an uninterruptible power supply system and reduce the number of components required in a circuit.SOLUTION: A power supply device 20 includes: two selectors 21; two inductors 22, a first end 21a of each of which is electrically connected to one of the two selectors 21; a full-bridge circuit 23 including two switch-series-connection portions, each switch-series-connection portion electrically connected to a second end 21b of one of the two inductors 22; a voltage regulation module 24 electrically connected between second ends 21b of the two inductors 22; and a controller 25 configured to control the two selectors 21 to be electrically connected to DC ports and actuate the voltage regulation module 24 to form a conductive path between the two inductors 22. on the basis of an operation command indicating a commercial power supply is in an abnormal state.SELECTED DRAWING: Figure 2A

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