Patent ID: 8782449

Claim:
A power supply system, comprising: a plurality of power supply units, each power supply unit including: an output terminal connected to each of the other output terminals in parallel and to a plurality of load units, a power supply section that inputs an input voltage and outputs a first output voltage from the output terminal to the plurality of load units, the first output voltage matching a first output voltage from each of the other power supply units, a controller that is configured to, when the respective power supply unit is a master power supply unit, output an output current level of the power supply unit to at least one other of the plurality of power supply units as a current balance signal, and configured to, when the respective power supply unit is a slave power supply unit, receive a current balance signal from a master power supply unit and control an amplification rate so that the output current level of the power supply unit matches the current balance signal, and a shut-off control section that shuts off the output of the first output voltage from the output terminal based on an inputted shut-off signal; and a management control unit that is inputted a configuration information representing a configuration of each of the plurality of load units that receives the first output voltage from a respective power supply unit, and is configured to output the shut-off signal to one or more of the plurality of power supply units based on the configuration information, the configuration information being information that represents a type and operation state of hardware mounted on the respective load unit, wherein, when the configuration information represents that the configuration of each of the plurality of load units are in stand-by, the management control unit outputs the shut-off signal to the power supply units so as to leave one power supply unit in operation mode in case of non-redundant operation of the power supply units or so as to leave two power supply units in operation mode in case of redundant operation of the power supply units.