| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a power distribution system capable of highly efficiently distributing AC power and DC power, and improving the efficiency of power. <P>SOLUTION: AC power supplied from an AC power system AC via an AC power distribution board 4 or AC power output from a power conditioner 3 is distributed to an AC load similarly in the prior art, and DC power of a solar cell 1 having constant voltage by a DC-DC converter 5 is distributed to a DC load. In this way, the DC power can be highly efficiently distributed, compared to the case where AC power output from the power conditioner 3 is converted into DC power and the converted DC power is distributed. Further, the DC power is preferentially supplied to the DC load via the DC-DC converter 5, then the AC power is preferentially supplied to the AC load by the power conditioner 3, and finally the AC power is supplied to the AC power system AC. In this way, even if the DC load or the AC load varies, the DC power output from the solar cell 1 is supplied so as to be automatically divided into the DC load, the AC load and the AC power system AC, and as the result, the efficiency of power can be improved. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
