| 摘要 |
PURPOSE:To replenish the power in the case of the shortage of output of a solar battery when the daylight is reduced without lowering the quality of power supply and to effectively use solar battery power at low cost. CONSTITUTION:By adjusting commercial AC voltage to the voltage approximately equivalent to the maximum power point voltage of a solar battery 4, connecting a commercial power supply 1 to the solar battery 4 in parallel via reverse current prevention diodes 6 and 7, respectively, so as to provide a series linkage and adjusting the voltage corresponding to temperature detected by a temperature sensor, the commercial power supply output voltage is always made approximately equivalent to the maximum power point voltage of the solar battery 4 and thus, the maximum power of the solar battery 4 can be stably obtained and the solar battery 4 can be continuously backed up with the commercial power supply 1 when the output of the battery 4 is short. |
