DIRECT-CURRENT POWER OUTPUT DEVICE AND SOLAR POWER GENERATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To suppress variation in reverse tidal-current power to a system by allowing a control means to switch and control the charging and discharging of a charging and discharging means by comparing the output of a DC power source with its target value. SOLUTION: A charging and discharging control part 5 is provided at a halfway part of a branch wire 9 to control the charging and discharging of a charging and discharging element 6. Namely, a switching command part of the charging and discharging control part 5 makes a switching judgement between charging operation and discharging operation according to output power information on a solar battery 1 of a DC collection box 2 which is supplied from a power sensor 10 provided between an intermediate point 8a and the output terminal 2a of the DC collection box 2 and switches the charging and discharging switching part 51 according to the judgement. Consequently, variation in the generated power of the DC power source due to variation of the sunshine is absorbed, so that the variation of the reverse tidal-current power to the system can be suppressed.