| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply system, power supply apparatus, and control method for the power supply system, capable of efficiently using power generated by a solar cell and a power generator.SOLUTION: A power supply system comprises a power supply apparatus (power conditioner 20) for controlling a storage cell 12, a solar cell 11, and a power generator 33. The power supply apparatus comprises: a first power conversion unit 21; a second power conversion unit 26; and a control unit 25 for making power generated by the solar cell reversely flow to a system through the first power conversion unit when the power supply apparatus is interconnected with the system. The power generator detects a forward power flow to generate power. The control unit, when the power generator generates surplus power, performs parallel-off on the storage cell from the system and charges the storage cell with the surplus power through the second power conversion unit.SELECTED DRAWING: Figure 1 |
