| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a low-cost distributed power unit which can supply an important load with power, even in the case that an inverter for supplying the important load with power when a commercial system is interrupted in power supply. <P>SOLUTION: Relating to a distributed power unit which supplies an important load with power by a distributed power source and an inverter, the distributed power unit is equipped with a PCS switch which is installed between a section switch and an AC-DC converter, a momentary-power-failure free changeover switch which switches the connection destination of the important load over to an inverter or a bypass circuit, and a bypass circuit which connects the intermediate between a connecting switch and the PCS switch with the momentary-power-failure free changeover switch, and the AC-DC converter converts DC power into AC power and charges the bypass circuit when a commercial power system is interrupted and besides the inverter is failed, and the momentary-power-failure free changeover switch connects the important load with the bypass circuit after the charge of the bypass circuit. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
