| 摘要 |
PURPOSE:To always fetch efficiently a maximum power by controlling an output of an invertor so that an output voltage of a main power supplying solar battery coincides with an output voltage of an auxiliary solar battery. CONSTITUTION:A DC output voltage of a main power supplying solar battery 11 is converted to AC of a desired voltage and frequency by an invertor 13, and supplied to an AC motor 12. In this case, an auxiliary solar battery 14 which has the same characteristic as the solar battery and a smaller generated power than said battery is used, and a load resistance 15 is connected to this auxiliary solar battery 14. In this state, a voltage VB obtained through the load resistance 15 and an output voltage VA of the main power supplying solar battery 11 are compared by a comparing and control means 16, the invertor 13 is controlled based on an output VC so that both the voltages always coincide with each other, and its output voltage frequency is controlled. |
