| 摘要 |
PURPOSE:To save power consumption in case of re-starting, by controlling the voltage of both the ends of an electrolytic capacitor to be made equal to reference voltage. CONSTITUTION:The output current of a solar battery 1 is fed to an inverter 4 via a diode 2 and an electrolytic capacitor 3, and direct current is converted to alternating current and is connected to a commercial power system 7 and is fed to a load 6. The voltage at both ends of the electrolytic capacitor 3 is detected by a DC voltage detector 8, and is compared with a reference power source 11 by a controlling means 15, and output is controlled. Accordingly, both the end voltage of the electrolytic capacitor 3 is retained to be constant to be made equal to said reference voltage 11, and the current of the same phase as that of the voltage of the load 6 (the voltage of the system 7) is fed to the load 6 from the inverter 4. As a result, by setting the reference voltage 11 to be voltage near the optimum working point of the solar battery 1, the generation power of the solar battery 1 can be efficiently fed to the load 6 in the state of the power factor of 1. |
