UNINTERRUPTIBLE POWER SUPPLY APPARATUS
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Abstract
An uninterruptible power supply apparatus includes a cooler cooling a converter/chopper circuit and a cooler cooling a PWM inverter. The converter/chopper circuit and the cooler make up one integrated unit. Accordingly, a smaller apparatus can be achieved, compared with a conventional apparatus in which a cooler is provided for each of a converter and a chopper.
12 Citations
3 Claims
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1. (canceled)
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2. An uninterruptible power supply apparatus, comprising:
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a combined converter/chopper circuit configured to convert a first AC power to DC power that is stored in a power storage device and to output the DC power stored in the power storage device during a power failure in which supply of the first AC power is stopped; an inverter to convert the DC power output by the combined converter/chopper circuit to a second AC power; a first cooler to cool said combined converter/chopper circuit; and a second cooler to cool said inverter; said combined converter/chopper circuit and said first cooler making up a single unit, said inverter and said second cooler making up a single unit, said first cooler including a first flat plate portion having a first surface on which said combined converter/chopper circuit is mounted, and a plurality of first fins provided on a second surface of said first flat plate portion, said second cooler including a second flat plate portion having a third surface on which said inverter is mounted, and a plurality of second fins provided on a fourth surface of said second flat plate portion, said first AC power being three-phase AC power, said combined converter/chopper circuit including three combined converter/chopper sub-circuits corresponding to three phases of said first AC power, respectively, each of said combined converter/chopper sub-circuits including a plurality of first switching elements connected in series between a first node and a second node and a plurality of first diodes connected in antiparallel to said plurality of first switching elements, respectively, a plurality of second switching elements connected in series between said first node and said second node and a plurality of second diodes connected in antiparallel to said plurality of second switching elements, respectively, wherein said first cooler and said second cooler are identical in cooling capacity. - View Dependent Claims (3)
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Specification