| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a DC power distribution system capable of improving the conversion efficiency in converting AC power into DC power. <P>SOLUTION: The DC power distribution system includes a power converter 1 for converting the AC power of an AC power source AC into DC power to be supplied to a power distribution passage DL connected to a load LF, and an auxiliary power supply device 2 connected to the power distribution passage DL. The auxiliary power supply device 2 includes a secondary battery 20, a charge device 21 for outputting a charged current to the secondary battery 20 on the basis of the power obtained from the power distribution passage DL, a discharge device 22 for supplying the power stored in the secondary battery 20 to the power distribution passage DL, a power detection device 23 for detecting the DC power amount supplied from the power converter 1, and a control unit 25 for controlling the charge device 21 and the discharge device 22 based on the detected result of the power detection device. The control unit 25 adjusts the magnitude of the charged current output by the charge device 21 so that the DC power amount detected by the power detecting device 23 becomes a value improving the conversion efficiency in the power converter 1. <P>COPYRIGHT: (C)2009,JPO&INPIT |
