| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an uninterruptible power supply device that can attain reduction in generation loss and longer service life for the components that constitute a converter part and an inverter part, while recovering from failures without problems, in feeding power to a load. <P>SOLUTION: The uninterruptible power supply device has a converter part 21, in which a plurality of converters are unitized and connected in parallel, and an inverter part 22 in which a plurality of inverters are unitized and connected in parallel. The input side of the inverter part 22 is connected to the DC output side of the converter part, while a storage battery 25 is connected to the DC output side of the converter part so as to be chargeable/dischargeable; and each converter unit in the converter part 21 and each inverter unit in the inverter part 22 are respectively individually subjected to operation stop control. <P>COPYRIGHT: (C)2008,JPO&INPIT |
