Power supply and method of controlling same
AssigneeFujitsu Limited
InventorKazuhiko Itakura
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Abstract
A power supply supplying electric power through parallel operation of power supply units is disclosed. Each of the power supply units includes a transformer; a stopped state latch part configured to latch a control signal for controlling outputting of the power supply unit in a predetermined stopped state to stop the outputting, after passage of a first time in response to detection of an overcurrent on a primary side of the transformer; and an outputting restriction part configured to set the control signal in a predetermined restricted state to restrict the outputting of the power supply unit without stopping the outputting, after passage of a second time in response to detection of an overcurrent on a secondary side of the transformer. The second time is shorter than the first time.
Claims12
A power supply supplying electric power through parallel operation of power supply units, wherein each of the power supply units comprises:
- a transformer;
- a stopped state latch part configured to latch a control signal for controlling outputting of the power supply unit in a predetermined stopped state to stop the outputting, after passage of a first time in response to detection of an overcurrent on a primary side of the transformer;
- and
- an outputting restriction part configured to set the control signal in a predetermined restricted state to restrict the outputting of the power supply unit without stopping the outputting, after passage of a second time in response to detection of an overcurrent on a secondary side of the transformer,
- wherein the second time is shorter than the first time.
A method of controlling a power supply supplying electric power through parallel operation of power supply units, wherein each of the power supply units includes a transformer, the method comprising:
- a stopped state latch step of latching a control signal for controlling outputting of the power supply unit in a predetermined stopped state to stop the outputting, after passage of a first time in response to detection of an overcurrent on a primary side of the transformer;
- and
- an outputting restriction step of setting the control signal in a predetermined restricted state to restrict the outputting of the power supply unit without stopping the outputting, after passage of a second time in response to detection of an overcurrent on a secondary side of the transformer,
- wherein the second time is shorter than the first time.
Dependencies are inferred from the claim text.