| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply system capable of supplying power even when a commercial power supply is interrupted.SOLUTION: A power supply system 1 comprises a solar cell 11, a power generator 14, a storage battery 16, and a control unit 18. The solar cell 11 supplies power to a communication facility 10. The power generator 14 operates to supply power to the communication facility 10 when a commercial power supply for supplying power to the communication facility 10 is interrupted. The storage battery 16 can supply stored power to the communication facility 10. In the case where the commercial power supply is interrupted, the control unit 18 causes the power generator 14 to operate when a voltage value corresponding to power stored in the storage battery 16 is equal to or lower than a predetermined lower limit voltage value and causes the power generator 14 to stop when the voltage value corresponding to power stored in the storage battery 16 becomes equal to a predetermined upper limit voltage value. The control unit 18 changes both of the lower limit voltage value and the upper limit voltage value depending on a condition with regard to power generation of the solar cell 11. |
