| 摘要 |
PROBLEM TO BE SOLVED: To perform charging of a storage battery stably with a small loss by connecting the output of a generator to the storage battery through a DC-DC converter. SOLUTION: At normality of a commercial power system, an electromagnetic contactor(MC) 3 is turned on, and MCs 5, 13, and 14 are turned off. Moreover, at normality, MCs 9 and 11 are turned off to cut off storage batteries 10 and 12. Accordingly, the DC power generated by a solar battery array 1 is converted into AC with an inverter 2, and is supplied to a power source 4 through MC 3, and the linkage operation of the commercial power system is performed. At abnormality of the commercial power system, MCs 5, 13, and 14 are turned on, and MCs 3, 9, and 11 are turned off. Accordingly, the DC power generated by a solar battery array 1 is converted into AC with an inverter 2, and is supplied to independent operation load 5 through MC 5. Moreover, in the case of charging the storage batteries 10 and 12, MCs 9 and 11 are turned on, and the DC power generated by the solar battery array 1 is supplied to them through the DC-DC converter 8 so as to charge. |
