| 摘要 |
PURPOSE:To lead maximum electric power corresponding to the quantity of incident light out of a solar battery by controlling an inverter interposed between the solar battery and a commercial power source at a frequency corresponding to the output voltage of the solar battery. CONSTITUTION:The solar battery 1 supplies the electric power corresponding to the quantity of incident light to the inverter 2, and a voltage-controlled oscillator 3 oscillates at the frequency (f) corresponding to the output voltage Ei of the solar battery 1. This oscillation frequency (f) is higher and higher as the output voltage Ei is higher and higher. The inverter 2 operates at this frequency (f) to perform conversion into an AC current. Its output is connected to the commercial power source 5 and load 6 through an inductor 4. The voltage Ei generated by the solar battery 1 in operation is converted by the inverter 2 into an AC voltage Einv of frequency (f). When the phase of this AC voltage Einv leads the phase of the AC waveform Eac of the commercial power source 5, the electric power is supplied from the side of the inverter 2 to the side of the commercial power source 5 and the load 6 is powered on by the solar battery 1.
|
