Power supply system
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorTetsuo Ishii
Life of this patent
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Abstract
A power supply system including a plurality of power units which supply power to loads through the common bus, wherein the number of power units connected to the bus is larger at least by one than the number of power units necessary to suffice the maximum power consumption of the load. The redundant power unit is ready to relieve a working power source unit in the event of fault. The power supply system incorporates a power monitoring unit which detects the failure of a power source unit.
Claims3
A power system comprising a plurality of power units connected to a common bus for supplying power to a load and having a total capacity larger than a maximum power consumption of said load by at least the amount of one of said power units, each of said power units having a capacity smaller than said maximum power consumption of said load and comprises a power source means which provides a specified voltage output to said bus and issues a normality signal when said power unit operates normally;
- and
- a power monitoring circuit comprising a voltage monitoring circuit which checks up the voltage on said bus and issues a first normal signal when the voltage is normal, and a power unit monitoring circuit which detects that all of said power source means are operating and provides a second normal signal.
Dependencies are inferred from the claim text.